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PMID: 32986448

Berger, B., Schmidt, D., Ma, X., Schumacher, S., Schneider, C., Höfling, S., &; Assmann, M. (2020). Formation dynamics of exciton-polariton vortices created by nonresonant annular pumping. Physical Review B, 101(24), 245309.https://doi.org/10.1103/PhysRevB.101.245309 
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Ma, X., Kartashov, Y., Ferrando, A., &; Schumacher, S. (2020). Topological edge states of nonequilibrium polaritons in hollow honeycomb arrays. Optics Letters, 45(19), 5311–5314.https://doi.org/10.1364/ol.405844 
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PMID: 33001881

Pukrop, M., Schumacher, S., &; Ma, X. (2020). Circular polarization reversal of half-vortex cores in polariton condensates. Physical Review B, 101(20), 205301.https://doi.org/10.1103/PhysRevB.101.205301 
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Ma, X., Kartashov, Y. V., Gao, T., Torner, L., &; Schumacher, S. (2020). Spiraling vortices in exciton-polariton condensates. Physical Review B, 102(4), 045309.https://doi.org/10.1103/PhysRevB.102.045309 
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Barkhausen, F., Schumacher, S., &; Ma, X. (2020). Multistable circular currents of polariton condensates trapped in ring potentials. Optics Letters, 45(5), 1192–1195.https://doi.org/10.1364/ol.386250 
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Schmidt, F., Kozub, A. L., Biktagirov, T., Eigner, C., Silberhorn, C., Schindlmayr, A., Schmidt, W. G., &; Gerstmann, U. (2020). Free and defect-bound (bi)polarons in LiNbO3: Atomic structure and spectroscopic signatures from ab initio calculations. Physical Review Research, 2(4), Article 043002.https://doi.org/10.1103/PhysRevResearch.2.043002 
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Braun, C., Neufeld, S., Gerstmann, U., Sanna, S., Plaickner, J., Speiser, E., Esser, N., &; Schmidt, W. G. (2020). Vibration-Driven Self-Doping of Dangling-Bond Wires on Si(553)-Au Surfaces. Physical Review Letters, 124(14).https://doi.org/10.1103/physrevlett.124.146802 
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Ma, X., Kartashov, Y., Kavokin, A., &; Schumacher, S. (2020). Chiral condensates in a polariton hexagonal ring. Optics Letters, 45(20), 5700–5703.https://doi.org/10.1364/ol.405400 
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von Bardeleben, H. J., Rauls, E., &; Gerstmann, U. (2020). Carbon vacancy-related centers in &;mml:math xmlns:mml="http://www..org/1998/Math/MathML"&;&;mml:mn&;3&;/mml:mn&;&;mml:mi&;C&;/mml:mi&;&;/mml:math&;-silicon carbide: Negative-&;mml:math xmlns:mml="http://www..org/1998/Math/MathML"&;&;mml:mi&;U&;/mml:mi&;&;/mml:math&; properties and structural transformation. Physical Review B, 101(18), Article 184108.https://doi.org/10.1103/physrevb.101.184108 
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Hannes, W.-R., &; Meier, T. (2020). k.p-based multiband simulations of non-degenerate two-photon absorption in bulk GaAs. In M. Betz &; A. Y. Elezzabi (Eds.), Ultrafast Phenomena and Nanophotonics XXIV (Vol. 11278, p. 112780S).https://doi.org/10.1117/12.2545924 
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Hannes, W.-R., Trautmann, A., Stein, M., Schäfer, F., Koch, M., &; Meier, T. (2020). Strongly nonresonant four-wave mixing in semiconductors. Physical Review B, 101(7), 075203.https://doi.org/10.1103/PhysRevB.101.075203 
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Song, X., Yang, S., Zuo, R., Meier, T., &; Yang, W. (2020). Enhanced high-order harmonic generation in semiconductors by excitation with multicolor pulses. Physical Review A, 101, Article 033410.https://doi.org/10.1103/physreva.101.033410 
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Bocchini, A., Eigner, C., Silberhorn, C., Schmidt, W. G., &; Gerstmann, U. (2020). Understanding gray track formation in KTP: Ti^3+ centers studied from first principles. Phys. Rev. Materials, 4, 124402.https://doi.org/10.1103/PhysRevMaterials.4.124402 
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Ma, X., Berger, B., Aßmann, M., Driben, R., Meier, T., Schneider, C., Höfling, S., &; Schumacher, S. (2020). Realization of all-optical vortex switching in exciton-polariton condensates. Nature Communications, 11(1), 897.https://doi.org/10.1038/s41467-020-14702-5 
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Baron, E., Goldhahn, R., Deppe, M., As, D. J., &; Feneberg, M. (2019). Influence of the free-electron concentration on the optical properties of zincblende GaN up to 1×1020cm3. Physical Review Materials.https://doi.org/10.1103/physrevmaterials.3.104603 
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Deppe, M., Gerlach, J. W., Shvarkov, S., Rogalla, D., Becker, H.-W., Reuter, D., &; As, D. J. (2019). Germanium doping of cubic GaN grown by molecular beam epitaxy. Journal of Applied Physics.https://doi.org/10.1063/1.5066095 
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Sain, B., Meier, C., &; Zentgraf, T. (2019). Nonlinear optics in all-dielectric nanoantennas and metasurfaces: a review. Advanced Photonics, 1(2), 024002.https://doi.org/10.1117/1.ap.1.2.024002 
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Frese, D., Wei, Q., Wang, Y., Huang, L., &; Zentgraf, T. (2019). Nonreciprocal Asymmetric Polarization Encryption by Layered Plasmonic Metasurfaces. Nano Letters, 19(6), 3976–3980.https://doi.org/10.1021/acs.nanolett.9b01298 
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Hammer, M., Ebers, L., &; Förstner, J. (2019). Oblique quasi-lossless excitation of a thin silicon slab waveguide: a guided-wave variant of an anti-reflection coating. Journal of the Optical Society of America B, 36, 2395.https://doi.org/10.1364/josab.36.002395 
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