Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Patric Rommel"'
Publikováno v:
Machine Learning: Science and Technology, Vol 5, Iss 1, p 015045 (2024)
Resonances in open quantum systems depending on at least two controllable parameters can show the phenomenon of exceptional points (EPs), where not only the eigenvalues but also the eigenvectors of two or more resonances coalesce. Their exact localiz
Externí odkaz:
https://doaj.org/article/ff7a36862b7b4606a33228b431f95f85
The seminal work by T. Kazimierczuk et al. [Nature 514, 343 (2014)] has shown the existence of highly excited exciton states in a regime, where the correspondence principle is applicable and quantum mechanics turns into classical mechanics, however,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4f901b0ac742232e54d03389299aa9dd
http://arxiv.org/abs/2207.07378
http://arxiv.org/abs/2207.07378
We study dipole interseries transitions between the yellow and green exciton series in cuprous oxide including the complex valence band structure. To this end, we extend previous studies of the spectrum of complex green exciton resonances [Phys. Rev.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::be0330bba50e05586dfdbcd2d9805359
http://arxiv.org/abs/2108.10441
http://arxiv.org/abs/2108.10441
We experimentally and numerically investigate the exchange interaction of the yellow excitons in cuprous oxide. By varying the material parameters in the numerical calculations, we can interpret experimental findings and understand their origin in th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::844428b9f357e103e07fce6c9ba272b8
Publikováno v:
Physical Review B. 101
We numerically investigate the odd parity states of the green exciton series in cuprous oxide. Taking into account the coupling to the yellow series and especially to the yellow continuum, the green excitons are quasi-bound resonances with a finite l
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d4db39bde14461322491a6f395548d43
https://doi.org/10.1103/physrevb.101.075208
https://doi.org/10.1103/physrevb.101.075208
Experimental and theoretical investigations of excitons in cuprous oxide have revealed a significant fine-structure splitting of the excitonic Rydberg states caused by a strong impact of the valence band structure. We provide a semiclassical interpre
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f22470a5ea2ca13db9b1117629366da0
Autor:
Dietmar Fröhlich, Dmitri R. Yakovlev, Patric Rommel, Andreas Farenbruch, Christoph Uihlein, Manfred Bayer, Jörg Main, J. Mund
Recently Second Harmonic Generation (SHG) for the yellow exciton series in cuprous oxide has been demonstrated [J. Mund et al., Phys. Rev. B 98, 085203 (2018)]. Assuming perfect $O_{\mathrm{h}}$ symmetry, SHG is forbidden along certain high-symmetry
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d7b3e2ab5735d7f52d60564e46994ab9
Publikováno v:
physica status solidi (RRL) – Rapid Research Letters. 15:2100335
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eea28ee50b3bf5a39f8b3f801d42dd6c
https://doi.org/10.1002/pssr.202100335
https://doi.org/10.1002/pssr.202100335
The complete theoretical description of experimentally observed magnetoexcitons in cuprous oxide has been achieved by F. Schweiner et al [Phys. Rev. B 95, 035202 (2017)], using a complete basis set and taking into account the valence band structure a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::285149433aa4c2781e092b315d254816
Autor:
Manfred Bayer, M. Freitag, Patric Rommel, Frank Schweiner, J. Heckötter, Jörg Main, Marc Aßmann, Dietmar Fröhlich, Kevin Lehninger
We investigate and compare experimental and numerical excitonic spectra of the yellow series in cuprous oxide Cu$_2$O in the Voigt configuration and thus partially extend the results from Schweiner et al. [Phys. Rev. B 95, 035202 (2017)], who only co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bdf95128908bee606587d525565d980b