1. T. Aschenbrenner, M. Schowalter, T. Mehrtens, K. Müller-Caspary, M. Fikry, D. Heinz, I. Tischer, M. Madel, K. Thonke, D. Hommel, F. Scholz, and A.ahr Rosenauer. Composition analysis of coaxially grown InGaN multi quantum wells using scanning transmission electron microscopy. Journal of Applied Physics, 119(17), 2016. [doi:10.1063/1.4948385]



2. Daniel Carvalho, Knut Müller-Caspary, Marco Schowalter, Tim Grieb, Thorsten Mehrtens, Andreas Rosenauer, Rafael Ben, Teresa Garcìa, Andrés Redondo-Cubero, Katharina Lorenz, Bruno Daudin, and Francisco M. Morales. Direct Measurement of Polarization-Induced Fields in GaN/AlN by Nano-Beam Electron Diffraction. Scientific Reports, 6:28459, June 2016. [doi:10.1038/srep28459] Keyword(s): DPC, strain, NBD, SANBED, nano-beam electron diffraction, polarization, polarisation, piezoelectric.



3. Matthias Lohr, Ralph Schregle, Michael Jetter, Clemens Wächter, Knut Müller-Caspary, Thorsten Mehrtens, Andreas Rosenauer, Ines Pietzonka, Martin Strassburg, and Josef Zweck. Quantitative measurements of internal electric fields with differential phase contrast microscopy on InGaN/GaN quantum well structures. physica status solidi (b), 253:140-144, 2016. ISSN: 1521-3951. [doi:10.1002/pssb.201552288] Keyword(s): DPC, Efficiency droop, EFTEM, electric fields, GaN, HAADF, IMFP, MQW, QCSE, quantification, STEM.



4. Knut Müller-Caspary, Florian F. Krause, Tim Grieb, Stefan Löffler, Marco Schowalter, Armand Béché, Vincent Galioit, Dennis Marquardt, Josef Zweck, Peter Schattschneider, Johan Verbeeck, and Andreas Rosenauer. Measurement of atomic electric fields and charge densities from average momentum transfers using scanning transmission electron microscopy. Ultramicroscopy, (in print), 2016. ISSN: 0304-3991. [WWW] [doi:10.1016/j.ultramic.2016.05.004] Keyword(s): TEM.



5. U. Rossow, L. Hoffmann, H. Bremers, E.R. Buss, F. Ketzer, T. Langer, A. Hangleiter, T. Mehrtens, M. Schowalter, and A. Rosenauer. Indium incorporation processes investigated by pulsed and continuous growth of ultrathin InGaN quantum wells. Journal of Crystal Growth, 414(0):49-55, 2015. Note: Proceedings of the Seventeenth International Conference on Metalorganic Vapor Phase Epitaxy. ISSN: 0022-0248. [WWW] [doi:10.1016/j.jcrysgro.2014.11.040] Keyword(s): A1. Surface processes.



6. Dominik Heinz, Mohamed Fikry, Timo Aschenbrenner, Marco Schowalter, Tobias Meisch, Manfred Madel, Florian Huber, Matthias Hocker, Manuel Frey, Ingo Tischer, Benjamin Neuschl, Thorsten Mehrtens, Knut Müller, Andreas Rosenauer, Detlef Hommel, Klaus Thonke, and Ferdinand Scholz. GaN tubes with coaxial non- and semipolar GaInN quantum wells. Phys. Status Solidi (c), 11:648-651, 2014.



7. Knut Müller, Florian F. Krause, Armand Béché, Marco Schowalter, Vincent Galioit, Stefan Löffler, Johan Verbeeck, Josef Zweck, Peter Schattschneider, and Andreas Rosenauer. Atomic electric fields revealed by a quantum mechanical approach to electron picodiffraction. Nature Communications, 5:5653:1-8, December 2014. [doi:10.1038/ncomms6653] Keyword(s): DPC, STEM, electric field.



8. Marco Schowalter, Ingo Stoffers, Florian F. Krause, Thorsten Mehrtens, Knut Müller, Malte Fandrich, Timo Aschenbrenner, Detlef Hommel, and Andreas Rosenauer. Influence of Static Atomic Displacements on Composition Quantification of AlGaN/GaN Heterostructures from HAADF-STEM Images. Microscopy and Microanalysis, 20:1463-1470, 10 2014. ISSN: 1435-8115. [doi:10.1017/S1431927614012732]



9. Olesea Volciuc, Vladimir Sergentu, Ion Tiginyanu, Marco Schowalter, Veaceslav Ursaki, Andreas Rosenauer, Detlef Hommel, and Jürgen Gutowski. Photonic Crystal Structures Based on GaN Ultrathin Membranes. Journal of Nanoelectronics and Optoelectronics, 9(2):271-275, 2014. [WWW] [doi:10.1166/jno.2014.1586] Keyword(s): GAN ULTRATHIN MEMBRANES, NANOSTRUCTURE FABRICATION, PHOTONIC CRYSTALS, THEORY AND DESIGN.



10. Malte Fandrich, Thorsten Mehrtens, Timo Aschenbrenner, Thorsten Klein, Martina Gebbe, Stephan Figge, Carsten Kruse, Andreas Rosenauer, and Detlef Hommel. Nitride based heterostructures with Ga- and N-polarity for sensing applications. Journal of Crystal Growth, 370(0):68-73, 2013. ISSN: 0022-0248. [WWW] Keyword(s): A1. Characterization, A3. Metalorganic vapor phase epitaxy, A3. Molecular beam epitaxy, B1. Nitrides, B3. Sensors.



11. Tim Grieb, Knut Müller, Rafael Fritz, Vincenzo Grillo, Marco Schowalter, Kerstin Volz, and Andreas Rosenauer. Quantitative chemical evaluation of dilute GaNAs using ADF STEM: Avoiding surface strain induced artifacts. Ultramicroscopy, 129(0):1-9, 2013. ISSN: 0304-3991. [WWW] [doi:10.1016/j.ultramic.2013.02.006] Keyword(s): Quantitative.



12. L. Hoffmann, H. Bremers, H. Jönen, U. Rossow, M. Schowalter, T. Mehrtens, A Rosenauer, and A. Hangleiter. Atomics scale investigations of ultra-thin GaInN/GaN quantum wells with high indium content. Applied Physics Letters, 102:102110, 2013. [doi:10.1063/1.4795623]



13. T Mehrtens, M Schowalter, D Tytko, P Choi, D Raabe, L Hoffmann, H Jönen, U Rossow, A Hangleiter, and A Rosenauer. Measuring composition in InGaN from HAADF-STEM images and studying the temperature dependence of Z-contrast. Journal of Physics: Conference Series, 471(1):012009, 2013. [WWW] [doi:10.1088/1742-6596/471/1/012009]



14. U. Rossow, A. Kruse, H. Jönen, L. Hoffmann, F. Ketzer, T. Langer, R. Buss, H. Bremers, A. Hangleiter, T. Mehrtens, M. Schowalter, and A. Rosenauer. Optimizing the growth process of the active zone in GaN based laser structures for the long wavelength region. Journal of Crystal Growth, 370(0):105-108, 2013. ISSN: 0022-0248. [WWW] Keyword(s): A3. Low press. metalorganic vapor phase epitaxy, A3. Quantum wells, A3. Laser epitaxy, B1. Nitrides, B2. Semiconducting III-V materials.



15. Tim Grieb, Knut Müller, Oleg Rubel, Rafael Fritz, Claas Gloistein, Nils Neugebohrn, Marco Schowalter, Kerstin Volz, and Andreas Rosenauer. Determination of Nitrogen Concentration in Dilute GaNAs by STEM HAADF Z-Contrast Imaging and improved STEM-HAADF strain state analysis. Ultramicroscopy, 117:15-23, 2012. [WWW] [doi:10.1016/j.ultramic.2012.03.014]



16. Thorsten Mehrtens, Stephanie Bley, Parlapalli Venkata Satyam, and Andreas Rosenauer. Optimization of the preparation of GaN-based specimens with low-energy ion milling for (S)TEM. Micron, 43(8):902-909, 2012. [WWW] Keyword(s): Scanning transmission electron microscopy, Focused ion beam, Argon ion milling, Low-energy ion milling, Stopping and range of ions in matter.



17. T. Aschenbrenner, G. Kunert, W. Freund, C. Kruse, S. Figge, M. Schowalter, C. Vogt, J. Kalden, K. Sebald, A. Rosenauer, J. Gutowski, and D. Hommel. Catalyst free self-organized grown high-quality GaN nanorods. physica status solidi (b), 248(8):1787-1799, 2011. ISSN: 1521-3951. [doi:10.1002/pssb.201147148] Keyword(s): MBE, MOVPE, nanorods, nitrides, TEM, III-V semiconductors.



18. Heiko Dartsch, Christian Tessarek, Timo Aschenbrenner, Stephan Figge, Carsten Kruse, Marco Schowalter, Andreas Rosenauer, and Detlef Hommel. Electroluminescence from InGaN quantum dots in a fully monolithic GaN/AlInN cavity. Journal of Crystal Growth, 320(1):28-31, 2011. ISSN: 0022-0248. [WWW] [doi:10.1016/j.jcrysgro.2010.12.008] Keyword(s): A1. Electroluminescence.



19. J. Falta, Th. Schmidt, S. Gangopadhyay, Chr. Schulz, S. Kuhr, N. Berner, J. I. Flege, A. Pretorius, A. Rosenauer, K. Sebald, H. Lohmeyer, J. Gutowski, S. Figge, T. Yamaguchi, and D. Hommel. Cleaning and growth morphology of GaN and InGaN surfaces. physica status solidi (b), 248(8):1800-1809, 2011. ISSN: 1521-3951. [doi:10.1002/pssb.201046574] Keyword(s): chemical analysis, scanning tunneling microscopy, quantum dots, X-ray photoemission spectroscopy.



20. Stephan Figge, Timo Aschenbrenner, Carsten Kruse, Gerd Kunert, Marco Schowalter, Andreas Rosenauer, and Detlef Hommel. A structural investigation of highly ordered catalyst- and mask-free GaN nanorods. Nanotechnology, 22(2):025603, 2011. [WWW]



21. M. Florian, F. Jahnke, A. Pretorius, A. Rosenauer, H. Dartsch, C. Kruse, and D. Hommel. Influence of growth imperfections on optical properties of nitride pillar VCSEL microcavities. physica status solidi (b), 248(8):1867-1870, 2011. ISSN: 1521-3951. [doi:10.1002/pssb.201147159] Keyword(s): lasers, laser diodes, microcavities, optical properties, III-V semiconductors.



22. Tim Grieb, Knut Müller, Oleg Rubel, Rafael Fritz, Claas Gloistein, Nils Neugebohrn, Marco Schowalter, Kerstin Volz, and Andreas Rosenauer. Determination of Nitrogen Concentration in Dilute GaNAs by STEM HAADF Z-Contrast Imaging. Journal of Physics: Conference Series, 326(1):012033, 2011. [WWW]



23. G Kunert, W Freund, T Aschenbrenner, C Kruse, S Figge, M Schowalter, A Rosenauer, J Kalden, K Sebald, J Gutowski, M Feneberg, I Tischer, K Fujan, K Thonke, and D Hommel. Light-emitting diode based on mask-Â and catalyst-free grown N-polar GaN nanorods. Nanotechnology, 22(26):265202, 2011. [WWW]



24. Angelika Pretorius, Thomas Schmidt, Timo Aschenbrenner, Tomohiro Yamaguchi, Christian Kübel, Knut Müller, Heiko Dartsch, Detlef Hommel, Jens Falta, and Andreas Rosenauer. Microstructural and compositional analyses of GaN based nanostructures. Physica Status Solidi, 248:1822-1836, 2011. [doi:10.1002/pssb.201147175]



25. Andreas Rosenauer, Thorsten Mehrtens, Knut Müller, Katharina Gries, Marco Schowalter, Parlapalli Venkata Satyam, Stephanie Bley, Christian Tessarek, Detlef Hommel, Katrin Sebald, Moritz Seyfried, Jürgen Gutowski, Adrian Avramescu, Karl Engl, and Stephan Lutgen. Composition mapping in InGaN by scanning transmission electron microscopy. Ultramicroscopy, 111:1316-1327, 2011. ISSN: 0304-3991. [WWW] Keyword(s): Quantitative STEM, Composition determination, Multislice simulation, Frozen lattice simulation.



26. Th. Schmidt, M. Siebert, J. I. Flege, S. Figge, S. Gangopadhyay, A. Pretorius, T.-L. Lee, J. Zegenhagen, L. Gregoratti, A. Barinov, A. Rosenauer, D. Hommel, and J. Falta. Mg and Si dopant incorporation and segregation in GaN. physica status solidi (b), 248(8):1810-1821, 2011. ISSN: 1521-3951. [doi:10.1002/pssb.201046531] Keyword(s): defects, dopants, photoelectron microscopy, segregation, X-ray standing waves.



27. C. Tessarek, S. Figge, T. Aschenbrenner, S. Bley, A. Rosenauer, M. Seyfried, J. Kalden, K. Sebald, J. Gutowski, and D. Hommel. Strong phase separation of strained InGaN layers due to spinodal and binodal decomposition: Formation of stable quantum dots. Phys. Rev. B, 83:115316, March 2011. [doi:10.1103/PhysRevB.83.115316]



28. T. Aschenbrenner, H. Dartsch, C. Kruse, M. Anastasescu, M. Stoica, M. Gartner, A. Pretorius, A. Rosenauer, Thomas Wagner, and D. Hommel. Optical and structural characterization of AlInN layers for optoelectronic applications. J. Appl. Phys., 108(6):063533, 2010. [WWW] [doi:10.1063/1.3467964] Keyword(s): aluminium compounds, annealing, distributed Bragg reflectors, extinction coefficients, III-V semiconductors, indium compounds, MOCVD coatings, refractive index, semiconductor epitaxial layers, surface morphology, surface roughness, transmission electron microscopy, vapour phase epitaxial growth, wide band gap semiconductors, X-ray diffraction.



29. Andreas Rosenauer, Katharina Gries, Knut Müller, Marco Schowalter, Angelika Pretorius, Adrian Avramescu, Karl Engl, and Stephan Lutgen. Measurement of composition profiles in III-nitrides by quantitative scanning transmission electron microscopy. Journal of Physics: Conference Series, 209(1):012009, 2010. [WWW] [doi:10.1088/1742-6596/209/1/012009]



30. Andreas Rosenauer, Katharina Gries, Knut Müller, Angelika Pretorius, Marco Schowalter, Adrian Avramescu, Karl Engl, and Stephan Lutgen. Measurement of specimen thickness and composition in AlGaN/GaN using high-angle annular dark field images. Ultramicroscopy, 109(9):1171-1182, 2009. ISSN: 0304-3991. [WWW] [doi:10.1016/j.ultramic.2009.05.003] Keyword(s): Quantitative STEM Z-contrast imaging.



31. M. Schowalter, A. Rosenauer, J. T. Titantah, and D. Lamoen. Temperature-dependent Debye-Waller factors for semiconductors with the wurtzite-type structure. Acta Crystallogr., Sect. A, 65(3):227-231, May 2009. [doi:10.1107/S0108767309004966]



32. T. Aschenbrenner, S. Figge, M. Schowalter, A. Rosenauer, and D. Hommel. Photoluminescence and structural analysis of a-plane InGaN layers. Journal of Crystal Growth, 310(23):4992-4995, 2008. Note: The Fourteenth International conference on Metalorganic Vapor Phase Epitax The 14th International conference on Metalorganic Vapor Phase Epitax. ISSN: 0022-0248. [WWW] [doi:10.1016/j.jcrysgro.2008.08.014] Keyword(s): A1. X-ray diffraction.



33. Abdul Kadir, M.R. Gokhale, Arnab Bhattacharya, Angelika Pretorius, and Andreas Rosenauer. {MOVPE} growth and characterization of InN/GaN single and multi-quantum well structures. Journal of Crystal Growth, 311(1):95-98, 2008. ISSN: 0022-0248. [WWW] [doi:10.1016/j.jcrysgro.2008.10.056] Keyword(s): A1. Transmission electron microscopy.



34. A. Pretorius, T. Yamaguchi, C. Kübel, R. Kröger, D. Hommel, and A. Rosenauer. Structural investigation of growth and dissolution of nano-islands grown by molecular beam epitaxy. Journal of Crystal Growth, 310(4):748-756, 2008. ISSN: 0022-0248. [WWW] [doi:10.1016/j.jcrysgro.2007.11.203] Keyword(s): A1. High resolution transmission electron microscopy.



35. R. Kroeger, T. Paskova, S. Figge, D. Hommel, and A. Rosenauer. Interfacial structure of a-plane GaN grown on r-plane sapphire. Appl. Phys. Lett., 90:081918, 2007.



36. R. Kröger, C. Kruse, C. Roder, D. Hommel, and A. Rosenauer. Relaxation in crack-free AlN/GaN superlattices. physica status solidi (b), 243(7):1533-1536, 2006. ISSN: 1521-3951. [doi:10.1002/pssb.200565470] Keyword(s): 42.79.Fm, 68.37.Lp, 68.55.Ln, 68.65.Cd, 71.72.Ff, 83.85.St.



37. A. Rosenauer, D. Gerthsen, and V. Potin. Strain state analysis of InGaN/GaN - sources of error and optimized imaging conditions. Phys. Status Solidi A, 203(1):176-184, January 2006. [doi:10.1002] Keyword(s): InGaN/GaN, In, Ga, N, optimised imaging conditions, optimized imaging conditions, aberrations, strain, strain state.



38. Th. Schmidt, M. Siebert, A. Pretorius, S. Gangopadhyay, S. Figge, J.I. Flege, L. Gregoratti, A. Barinov, D. Hommel, and J. Falta. Spectro-microscopy of Si doped GaN films. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 246(1):79-84, 2006. Note: Synchrotron Radiation and Materials Science Proceedings of the E-MRS 2005 Symposium O on Synchrotron Radiation and Materials Science E-MRS 2005 Symposium O. ISSN: 0168-583X. [WWW] [doi:10.1016/j.nimb.2005.12.018] Keyword(s): Photoemission microscopy.



39. M. Schowalter, A. Rosenauer, D. Lamoen, P. Kruse, and D. Gerthsen. Ab initio computation of the mean inner Coulomb potential of wurtzite-type semiconductors and gold. Applied Physics Letters, 88(23):232108-232108-3, 2006. ISSN: 0003-6951. [doi:10.1063/1.2210453] Keyword(s): APW calculations, II-VI semiconductors, III-V semiconductors, ab initio calculations, aluminium compounds, cadmium compounds, density functional theory, electric potential, gallium compounds, gold, indium compounds, monolayers, wide band gap semiconductors, zinc compounds, 7361Ey, 7361Ga.



40. Meng-Ku Chen, Yung-Chen Cheng, Jiun-Yang Chen, Cheng-Ming Wu, C.C. Yang, Kung-Jen Ma, Jer-Ren Yang, and Andreas Rosenauer. Effects of silicon doping on the nanostructures of InGaN/GaN quantum wells. Journal of Crystal Growth, 279(1-2):55-64, 2005. ISSN: 0022-0248. [WWW] [doi:10.1016/j.jcrysgro.2005.02.018] Keyword(s): A1. Segregation.



41. Yung-Chen Cheng, Cheng-Ming Wu, C. C. Yang, Gang Alan Li, Andreas Rosenauer, Kung-Jen Ma, Shih-Chen Shi, and L. C. Chen. Effects of interfacial layers in InGaN/GaN quantum-well structures on their optical and nanostructural properties. Journal of Applied Physics, 98(1):014317, 2005. [WWW] [doi:10.1063/1.1978988] Keyword(s): indium compounds, gallium compounds, III-V semiconductors, wide band gap semiconductors, semiconductor quantum wells, nanostructured materials, photoluminescence, electroluminescence, Stark effect.



42. Yung-Chen Cheng, En-Chiang Lin, Cheng-Ming Wu, C.C. Yang, Jer-Ren Yang, Andreas Rosenauer, Kung-Jen Ma, Shih-Chen Shi, L.C. Chen, Chang-Chi Pan, and Jen-Inn Chyi. Nanostructures and carrier localization behaviors of green-luminescence InGaN/GaN quantum-well structures of various silicon-doping conditions. Applied Physics Letters, 84(14):2506-2508, 2004. ISSN: 0003-6951. [doi:10.1063/1.1690872] Keyword(s): III-V semiconductors, gallium compounds, indium compounds, photoluminescence, quantum confined Stark effect, semiconductor doping, semiconductor quantum wells, silicon, wide band gap semiconductors, 6172Vv, 6865Fg, 7855Cr, 7867De.



43. Yung-Chen Cheng, Cheng-Ming Wu, Meng-Kuo Chen, C. C. Yang, Zhe-Chuan Feng, Gang Alan Li, Jer-Ren Yang, Andreas Rosenauer, and Kung-Je Ma. Improvements of InGaN/GaN quantum-well interfaces and radiative efficiency with InN interfacial layers. Applied Physics Letters, 84(26):5422-5424, 2004. [WWW] [doi:10.1063/1.1767603] Keyword(s): indium compounds, gallium compounds, III-V semiconductors, wide band gap semiconductors, semiconductor quantum wells, photoluminescence, electroluminescence, monolayers.



44. V. Potin, E. Hahn, A. Rosenauer, D. Gerthsen, B. Kuhn, F. Scholz, A. Dussaigne, B. Damilano, and N. Grandjean. Comparison of the In distribution in InGaN/GaN quantum well structures grown by molecular beam epitaxy and metalorganic vapor phase epitaxy. Journal of Crystal Growth, 262(1-4):145-150, 2004. ISSN: 0022-0248. [WWW] [doi:10.1016/j.jcrysgro.2003.10.082] Keyword(s): A1. Metalorganic vapor phase epitaxy.



45. D. Gerthsen, B. Neubauer, A. Rosenauer, T. Stephan, H. Kalt, O. Schon, and M. Heuken. InGaN composition and growth rate during the early stages of metalorganic chemical vapor deposition. Applied Physics Letters, 79(16):2552-2554, 2001. ISSN: 0003-6951. [doi:10.1063/1.1409949] Keyword(s): III-V semiconductors, MOCVD, gallium compounds, indium compounds, lattice constants, photoluminescence, red shift, semiconductor growth, semiconductor quantum wells, spectral line intensity, transmission electron microscopy, wide band gap semiconductors, 6865Fg, 7855Cr, 7867De, 8107St, 8115Gh.



46. I.L. Krestnikov, A.V. Sakharov, W.V. Lundin, Yu.G. Musikhin, A.P. Kartashova, A.S. Usikov, A.F. Tsatsul’nikov, N.N. Ledentsov, Zh.I. Alferov, I.P. Soshnikov, E. Hahn, B. Neubauer, A. Rosenauer, D. Litvinov, D. Gerthsen, A.C. Plaut, A.A. Hoffmann, and D. Bimberg. Lasing in the vertical direction in InGaN/GaN/AlGaN structures with InGaN quantum dots. Semiconductors, 34(4):481-487, 2000. ISSN: 1063-7826. [doi:10.1134/1.1188011]



47. I.P. Soshnikov, V.V. Lundin, A.S. Usikov, I.P. Kalmykova, N.N. Ledentsov, A. Rosenauer, B. Neubauer, and D. Gerthsen. Specifics of MOCVD formation of In(x)Ga(1−x)N inclusions in a GaN matrix. Semiconductors, 34(6):621-625, 2000. ISSN: 1063-7826. [doi:10.1134/1.1188041]



48. A F Tsatsul'nikov, I L Krestnikov, W V Lundin, A V Sakharov, A P Kartashova, A S Usikov, Zh I Alferov, N N Ledentsov, A Strittmatter, A Hoffmann, D Bimberg, I P Soshnikov, D Litvinov, A Rosenauer, D Gerthsen, and A Plaut. Formation of GaAsN nanoinsertions in a GaN matrix by metal-organic chemical vapour deposition. Semiconductor Science and Technology, 15(7):766, 2000. [WWW]



49. Stephan Kaiser, Herbert Preis, Wolfgang Gebhardt, Oliver Ambacher, Helmut Angerer, Martin Stutzmann, Andreas Rosenauer, and Dagmar Gerthsen. Quantitative Transmission Electron Microscopy Investigation of the Relaxation by Misfit Dislocations Confined at the Interface of GaN/Al$_{ extbf{2}}$O$_{ extbf{3}}$(0001). Japanese Journal of Applied Physics, 37(Part 1, No. 1):84-89, 1998. [WWW] [doi:10.1143/JJAP.37.84]

1. M. Müller, S. Metzner, T. Hempel, P. Veit, F. Bertram, F F Krause, T. Mehrtens, K. Müller-Caspary, A Rosenauer, T. Schimpke, A. Avramescu, M. Strassburg, and J. Christen. Optical, structural and compositional nano-scale characterization of InGaN/GaN core-shell microrod heterostructucom (Talk). In Proceedings of the Society of Photo-Optical Instrumentation Engineers Photonics West 2016 (SPIE Photonics West 2016) , San Francisco (USA), 2016.



2. Knut Müller-Caspary, Florian F. Krause, Armand Béché, Martial Duchamp, Marco Schowalter, Stefan Löffler, Vadim Migunov, Florian Winkler, Martin Huth, Robert Ritz, Sebastian Ihle, Martin Simson, Henning Ryll, Heike Soltau, Lothar Strüder, Josef Zweck, Peter Schattschneider, Rafal Dunin-Borkowski, Johan Verbeeck, and Andreas Rosenauer. Measurement of Atomic Electric Fields by Scanning Transmission Electron Microscopy (STEM) Employing Ultrafast Detectors. In Microscopy and Microanalysis 2016, Columbus (OH/USA), [Invited Talk], volume 22, pages 484-485, July 24-28th 2016. Microscopy Society of America. [WWW] [doi:10.1017/S1431927616003275] Keyword(s): DPC, pnccd.



3. Knut Müller-Caspary, Oliver Oppermann, Tim Grieb, Andreas Rosenauer, Marco Schowalter, Florian F. Krause, Thorsten Mehrtens, Pavel Potapov, Andreas Beyer, and Kerstin Volz. Angle-resolved Scanning Transmission Electron Microscopy (ARSTEM) for materials analysis. In European Microscopy Congress 2016, Lyon (F), [Poster IM06-350], 2016. [doi:10.1002/EMC2016.0259]



4. Florian Fritz Krause, Andreas Rosenauer, Knut Müller-Caspary, Marco Schowalter, and Thorsten Mehrtens. Conventional Transmission Electron Microscopy Imaging beyond the Diffraction and Information Limits. In Frontiers of Electron Microscopy in Materials Science (FEMMS) 2015, Lake Tahoe (CA/USA), [Invited Talk], September 13-18th 2015.



5. Johannes Ledig, Tilman Schimpke, Gregor Scholz, Florian F. Krause, Andreas Rosenauer, Martin Strassburg, Hergo-Heinrich Wehmann, and Andreas Waag. Comparison of electroluminescence and IV characteristics along a GaN based core-shell LED taken by point contacts inside a CL-SEM (Poster). In Proceedings of the Microscopy Conference 2015 (MC 2015), Göttingen (D), 2015.



6. Knut Müller, Florian F. Krause, Armand Béché, Marco Schowalter, Vincent Galioit, Stefan Löffler, Johan Verbeeck, Josef Zweck, Peter Schattschneider, and Andreas Rosenauer. A quantum mechanical approach to electron picodiffraction reveals atomic electric fields. In Materials Research Society Spring Meeting 2015 (MRS 2015), San Francisco (USA) [Talk], volume Symposium ZZ, Talk 2.02, 2015.



7. Knut Müller, Florian F. Krause, Armand Béché, Marco Schowalter, Vincent Galioit, Stefan Löffler, Johan Verbeeck, Josef Zweck, Peter Schattschneider, and Andreas Rosenauer. Quantum mechanical interpretation of electron picodiffraction reveals atomic electric fields. In Microscopy of Semiconducting Materials 2015 (MSM XIX), Cambridge (UK) [Talk], volume Session 4b (Wed, April 1st), 2015.



8. M. Müller, S. Metzner, T. Hempel, P. Veit, F. Bertram, F. F. Krause, T. Mehrtens, K. Müller-Caspary, A. Rosenauer, T. Schimpke, M. Strassburg, and J. Christen. Nanoscale Characterization of InGaN/GaN core-shell microrods: Correlation of the optical properties and the composition of the InGaN single quantum well (Talk). In Proceedings of the International Conference on Nitride Semiconductors 2015 (ICNS 11), Peking (CHN), 2015.



9. Knut Müller-Caspary, Florian F. Krause, Armand Béché, Marco Schowalter, Vincent Galioit, Stefan Löffler, Oliver Oppermann, Tim Grieb, Andreas Oelsner, Pavel Potapov, Johan Verbeeck, Josef Zweck, Peter Schattschneider, and Andreas Rosenauer. Quantum mechanical interpretation of electron picodiffraction reveals atomic electric fields. In Frontiers of Electron Microscopy in Materials Science (FEMMS) 2015, Lake Tahoe (CA/USA), [Invited Talk], September 13-18th 2015.



10. Andreas Rosenauer, Florian F. Krause, Knut Müller, Marco Schowalter, and Thorsten Mehrtens. Conventional Transmission Electron Microscopy Imaging beyond the Diffraction and Information Limits. In Materials Research Society Spring Meeting 2015 (MRS 2015), San Francisco (USA) [Talk], volume Symposium ZZ, Talk 2.02, 2015.



11. T. Schimpke, M. Binder, B. Galler, J. Hartmann, A. Waag, F. F. Krause, T. Mehrtens, A. Rosenauer, M. Müller, S. Metzner, P. Veit, F. Bertram, J. Christen, and H-J. Lugauer M. Strassburg1. Control of emission wavelength gradient along the m-plane facet of high aspect-ratio core-shell InGaN/GaN microrod LED structures (Talk). In Proceedings des Arbeitskreistreffens der Deutsche Gesellschaft für Kristallwachstum und Kristallzüchtung e.V. Arbeitskreis Epitaxie von III-V-Halbleitern 2014(AK III-V DGKK 29), Magdeburg (D), 2014.



12. Tim Grieb, Knut Müller, Emanuel Cadel, Rafael Fritz, Nils Neugebohrn, Etienne Talbot, Marco Schowalter, Kerstin Volz, and Andreas Rosenauer. Chemical composition analysis of dilute GaNAs and InGaNAs by high-angle annular dark field STEM. In International Conference on Electron Microscopy and XXIV Annual Meeting of the Electron Microscope Society of India (EMSI) 2013, Kolkata (India) [Talk], 2013.



13. T. Grieb, K. Müller, R. Fritz, V. Grillo, M. Schowalter, K. Volz, and A. Rosenauer. Avoiding surface strain field induced artifacts in 2d chemical mapping of dilute GaNAs quantum wells by HAADF STEM. In Proceedings of the Microscopy Conference 2013 (MC 2013, Regensburg) Germany [Poster], volume 1: Instrumentation and Methods, pages IM.1.P008, 2013.



14. Marco Schowalter, Ingo Stoffers, Florian Krause, Thorsten Mehrtens, Knut Müller, Malte Fandrich, Timo Aschenbrenner, Detlef Hommel, and Andreas Rosenauer. Composition determination using HAADF-STEM in AlGaN/GaN heterostructures revisited. In Microscopy Conference 2013 (MC 2013, Regensburg) [Poster Presentation], volume 1: Instrumentation and Methods, pages IM.1.P028, 2013.



15. Ingo Stoffers, Marco Schowalter, Florian Krause, Thorsten Mehrtens, Knut Müller, Malte Fandrich, Timo Aschenbrenner, Detlef Hommel, and Andreas Rosenauer. Composition quantification from HAADF-STEM in AlGaN/GaN heterostructures revisited. In Microscopy of Semiconducting Materials 2013 (MSMX VIII),Oxford (UK) [Poster Presentation], 2013.



16. Stephanie Bley, Thorsten Mehrtens, Parlapalli Venkata Satyam, and Andreas Rosenauer. Optimierung der Präparation von GaN-basierten Proben mittels Niedrigenergie-Ionendünnung für (S)TEM. In DPG Frühjahrstagung, Berlin (Germany) [Talk], number HL 64.7, pages 240, 2012.



17. Malte Fandrich, Timo Aschenbrenner, Stephan Figge, Thorsten Mehrtens, Andreas Rosenauer, and Detlef Hommel. AlInN/GaN-heterostructures for sensing applications. In Verhandlungen der DPG, number HL 73.1, pages 245, 2012.



18. Tim Grieb, Knut Müller, Rafael Fritz, Marco Schowalter, Kerstin Volz, and Andreas Rosenauer. A method to avoid strain field induced artifacts in 2D chemical mapping of dilute GaNAs by HAADF STEM. In Microscopy and Microanalysis [Talk 595], volume 18, pages 1028-1029, 2012. [doi:10.1017/S143192761200699X]



19. Tim Grieb, Knut Müller, Rafael Fritz, Marco Schowalter, Kerstin Volz, and Andreas Rosenauer. A new method for true 2d chemical mapping: strain-field unaffected evaluation of dilute GaNAs by HAADF STEM. In Microscopy and Microanalysis (M&M) conference 2012, Phoenix (USA) [Poster], 2012.



20. Lars Hoffmann, Heiko Bremers, Holger Jönen, Uwe Rossow, Thorsten Mehrtens, Marco Schowalter, Andreas Rosenauer, and Andreas Hangleiter. STEM and XRD investigations of ultra thin GaInN/GaN quantum wells with high indium content. In Verhandlungen der DPG, number HL 64.6, pages 240, 2012.



21. L. Hoffmann, H. Bremers, H. Jönen, U. Rossow, T. Mehrtens, M. Schowalter, A. Rosenauer, and A. Hangleiter. STEM and XRD investigations of ultra-thin GaInN/GaN quantum wells with high indium content. In International Workshop on Nitride Semiconductors 2012 [Talk], 2012.



22. Knut Müller, Andreas Rosenauer, Marco Schowalter, Josef Zweck, Rafael Fritz, and Kerstin Volz. Strain analysis by nano-beam electron diffraction (SANBED) in semiconductor nanostructures [Invited talk]. In The XXXIII Annual Meeting of the Electron Microscopy Society of India, pages 36, 2012. Keyword(s): SANBED.



23. Andreas Rosenauer, Knut Müller, Thorsten Mehrtens, Marco Schowalter, Alexander Würfel, Timo Aschenbrenner, Carsten Kruse, Detlef Hommel, Lars Hoffmann, Andreas Hangleiter, S. A. Gerstl, Pyuck-Pa Choi, and Dirk Raabe. Measurement of composition and strain in InGaN quantum dots by STEM [Plenary talk]. In The XXXIII Annual Meeting of the Electron Microscopy Society of India, EMSI2012, Bengaluru (Indien), July 4, 2012 [invited talk], pages 25, 2012.



24. Andreas Rosenauer, Knut Müller, Thorsten Mehrtens, Marco Schowalter, Josef Zweck, Rafael Fritz, and Kerstin Volz. Measurement of composition and strain by STEM. In Microscopy and Microanalysis 2012 (M&M2012), Phoenix, Arizona, July 29-August 2 [Invited talk], volume 18, pages 1804-1805, 2012. [doi:10.1017/S1431927612010872]



25. Uwe Rossow, Andreas Kruse, Holger Jönen, Lars Hoffmann, Fedor Ketzer, Torsten Langer, Ronald Buss, Heiko Bremers, Andreas Hangleiter, Thorsten Mehrtens, Marco Schowalter, and Andreas Rosenauer. Optimizing the Growth Process of the Active Zone in GaN Based Laser Structures for the Long Wavelength Region. In ICMOVPE - XVI [Talk], 2012.



26. Heiko Dartsch, Christian Tessarek, Stephan Figge, Timo Aschenbrenner, Carsten Kruse, Marco Schowalter, Andreas Rosenauer, and Detlef Hommel. Electroluminescence from InGaN quantum dots in a monolithically grown GaN/AlInN cavity. In DPG Frühjahrstagung, Dresden (Germany) [Talk], 2011.



27. T. Grieb, K. Müller, O. Rubel, R. Fritz, C. Gloistein, N. Neugebohrn, M. Schowalter, K. Volz, and A. Rosenauer. Determination of Nitrogen concentration in dilute GaNAs by STEM HAADF Z-contrast imaging. In MSM 2011 Cambridge, U.K. [talk] talk D13, 2011.



28. Tim Grieb, Knut Müller, Oleg Rubel, Rafael Fritz, Marco Schowalter, Kerstin Volz, and Andreas Rosenauer. Determination of nitrogen concentration in dilute GaNAs by STEM HAADF Z-contrast imaging. In DPG Frühjahrstagung, Dresden (Germany) [Talk], 2011.



29. T. Grieb, K. Müller, O. Rubel, R. Fritz, M. Schowalter, K. Volz, and A. Rosenauer. STEM strain state analysis in combination with HAADF intensity evaluation to determine chemical composition of GaNAs quantum wells. In W. Jäger, W. Kaysser, W. Benecke, W. Depmeier, S. Gorb, L. Kienle, M. Mulisch, D. Häussler, and A. Lotnyk, editors, Proceedings of the Microscopy Conference 2011 (MC 2011, Kiel), volume 1: Instrumentation and Methods, pages IM2.P120, 2011. DGE - German Society for Electron Microscopy.



30. L. Hoffmann, H. Bremer, H. Jönen, U. Rossow, J. Thalmair, J. Zweck, M. Schowalter, A. Rosenauer, and A. Hangleiter. Strain Relaxation Mechanisms in Green Emitting GaInN/GaN Laser Diode Structures. In ICNS 9 Glasgow, U.K., 2011 [talk] talk B4.3, 2011.



31. Lars Hoffmann, Heiko Bremers, Holger Joenen, Uwe Rossow, Johannes Thalmair, Josef Zweck, Marco Schowalter, Andreas Rosenauer, and Andreas Hangleiter. Strain Relaxation Mechanisms in Green Emitting GaInN/GaN Laser Diode Structures. In DPG Frühjahrstagung, Dresden (Germany) [Talk], 2011.



32. Thorsten Mehrtens, Stephanie Bley, Marco Schowalter, Kathrin Sebald, Moritz Seyfried, Jürgen Gutowski, Stephan S. A. Gerstl, Pyuck-Pa Choi, Dierk Raabe, Adrian Avramescu, and Andreas Rosenauer. Determination of composition in InGaN/GaN heterostructures using (S)TEM, Atom Probe Tomography and Photoluminescence. In E-MRS Spring Meeting 2011, Nice (France) [Talk], 2011.



33. T. Aschenbrenner, G. Kunert, W. Freund, S. Figge, C. Kruse, M. Schowalter, C. Vogt, A. Rosenauer, J. Kalden, K. Sebald, J. Gutowski, and D Hommel. High quality GaN nanorods: from catalyst free growth to an LED. In presented at IWN 2010, 2010.



34. Stephanie Bley, Thorsten Mehrtens, and Andreas Rosenauer. Präparation von GaN-basierten Proben mittels Niedrigenergie-Ionendünnung für Transmissionselektronenmikroskopie. In DPG Frühjahrstagung, Regensburg, number HL 34.33, 2010.



35. M. Schowalter, T. Aschenbrenner, C. Kruse, D. Hommel, and A. Rosenauer. TEM characterization of catalyst- and mask-free grown GaN nanorods. In MSM XVI, Oxford 2009, 16.-20. März Journal of Physics: Conference Series, 209 (2010) 012020, 2010.



36. Timo Aschenbrenner, Gerd Kunert, Carsten Kruse, Stephan Figge, Joachim Kalden, Kathrin Sebald, Knut Müller, Marco Schowalter, Jürgen Gutowski, Andreas Rosenauer, and Detlef Hommel. Catalyst- and mask-free grown GaN nanocolumns. In E-MRS Fall Meeting 2009, Warsaw (Poland) [Invited talk], 2009.



37. T. Aschenbrenner, S. Figge, D. Hommel, M. Schowalter, and A. Rosenauer. MOVPE-growth of a-plane InGaN quantum wells on GaN buffer layers on r-plane sapphire substrates. In IC-MOVPE, 1.-6. June 2008, 2008.



38. H. Dartsch, S. Figge, T. Aschenbrenner, A. Pretorius, A. Rosenauer, and D. Hommel. Strain compensated AlGaN/GaN-Bragg-reflectors with high Al content grown by MOVPE. In IC-MOVPE, 1.-6. June 2008, 2008.



39. A. Pretorius, T. Aschenbrenner, H. Dartsch, S. Figge, D. Hommel, and A. Rosenauer. Transmission electron microscopical investigation of AlGaN/GaN distributed Bragg reflectors. In IWN 2008, 6-10 Oktober, Montreaux, Schweiz Physica Status Solidi C 6, S680-S683, 2008.



40. A. Pretorius, A. Rosenauer, T. Aschenbrenner, H. Dartsch, S. Figge, and D. Hommel. TEM analyses of microstructure and composition of Al(x)Ga(1-x)N/GaN distributed Bragg reflectors. In S. Richter, A. Schwedt (Eds.): EMC 2008, Vol. 2: Materials Science, pp. 81-82, DOI: 10.1007/978-3-540-85226-1_41, 2008.



41. R. Kroeger, T. Paskova, A. Rosenauer, D. Hommel, B. Monemar, P. Fini, B. Haskell, J. Speck, and S. Nakamura. On the mechanism of dislocation and stacking fault formation in a-plane GaN films grown by hydride vapor phase epitaxy. In Physics of Semiconductors, 28th International Conference. Vienna, Austria. 24-28 July 2006. AIP-Conference-Proceedings. 2007; 893: 341-2, 2007.



42. R. Kröger, T. Paskova, D. Hommel, A. Rosenauer, P. Fini, B. Haskell, J. Speck, S. Nakamura, and B. Monemar. Defects in a-plane GaN films on r-plane sapphire. In Springer Proceedings in Physics: MSM(2007), 2007.



43. A. Pretorius, M. Schowalter, N. Daneu, R. Kröger, A. Recnik, and A. Rosenauer. Structural analysis of pyramidal defects in Mg-doped GaN. In ICNS-6, August / September 2005, Bremen Phys. stat. sol c, 3 (2006), 1803, 2006.



44. T. Yamaguchi, S. Einfeldt, S. Gangopadhyay, A. Pretorius, A. Rosenauer, J. Falta, and D. Hommel. Two to three dimensional transitions of InGaN and the impact of GaN overgrowth. In ICNS 6, August / September 2005, Bremen Phys. stat. sol c, 3 (2006), 1396-1399, 2006.



45. A. Rosenauer and D. Gerthsen. Optimum imaging conditions for strain state analysis of InGaN/GaN heterostructures. In Proceedings of the 13th European Microscopy Congress, Antwerp, Belgium, August 22-27, 2004, Vol. 1, 103-104, 2004.



46. V. Potin, E. Hahn, M. Schowalter, A. Rosenauer, D. Gerthsen, B. Kuhn, and F. Scholz. Quantitative analysis of the In-distribution in InGaN/GaN-heterostructures. In International Conference on Electron Microscopy (ICEM) 15, Durban, 1-6 September 2002, 2002.



47. V. Potin, E. Hahn, A. Rosenauer, and D. Gerthsen. Determination of indium composition fluctuation in InGaN/GaN quantum wells by quantitative high resolution electron microscopy. In Microcopy of Semiconducting Materials 2001, Oxford, UK, 25-29 March 2001, Inst. Phys. Conf. Ser. 169, 25-28 Proceedings of the Royal Microscopical Society Conference, Editors A.G. Cullis, J.L. Hutchison, Institute of Physics Publishing (2001), 2001.



48. M. Müller, S. Metzner, T. Hempel, P. Veit, F. Bertram, F F Krause, T Mehrtens, K. Müller-Caspary, A Rosenauer, T. Schimpke, A. Avramescu, M. Strassburg, and J. Christen. Optical, structural and compositional nano-scale characterization of InGaN/GaN core-shell microrod heterostructures (Talk). In Society of Photo-Optical Instrumentation Engineers Photonics West 2016 (SPIE Photonics West 2016) , San Francisco (USA), .

1. Patrick Karasch. Messung von Verspannungen und piezoelektrischen Feldern in InGaN/GaN Quantentrögen mittels Elektronenbeugung (Measurement of strain and piezoelectric fields in InGaN/GaN quantum wells by electron diffraction), August 2012.

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