DPG Phi
Verhandlungen
Verhandlungen
DPG

Dresden 2017 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

HL: Fachverband Halbleiterphysik

HL 83: Oxide Semiconductors (joined session with CPP, DS)

HL 83.3: Vortrag

Freitag, 24. März 2017, 10:15–10:30, POT 51

Influence of temperature on the creation of Rydberg excitons — •Peter Grünwald1, Julian Heckötter2, Marc Aßmann2, Dietmar Fröhlich2, Manfred Bayer2, Heinrich Stolz1, and Stefan Scheel11Institut für Physik, Universität Rostock, Rostock, Germany — 2Experimentelle Physik 2, TU Dortmund, Dortmund, Germany

Solid-state systems are heavily influenced by temperature, changing the crystal structure and thus shifting the energy bands [1,2]. Excitons in semiconductors additionally experience collision ionization, and a decrease of the band edge due to plasma interaction [3]. However, in most semiconductor systems, measuring these effects is difficult because of the limited number of exciton states available. This is different for Rydberg excitons [4], where states up to n20 can easily be generated. Hence, these states can be used to analyze the temperature influence on the excited states and the excitation limit set by finite temperature.

[1] T. Itoh and S. Narita, J. Phys. Soc. Japan 39, 140 (1975).

[2] P. B. Allen and M. Cardona, Phys. Rev. B 23, 1495 (1980).

[3] D. Semkat et al., Phys. Rev. B 80, 155201 (2009).

[4] T. Kazimierczuk et al., Nature 514, 343 (2014).

100% | Mobil-Ansicht | English Version | Kontakt/Impressum/Datenschutz
DPG-Physik > DPG-Verhandlungen > 2017 > Dresden