55 citations · 289 across the 20 of their papers we have counts for
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Dielectric response of electron-hole systems. Nondegenerate case and quantum corrections
Dirk Semkat, Heinrich Stolz, Wolf-Dietrich Kraeft +1
Analytical results for the dielectric function in RPA are derived for three-, two-, and one-dimensional semiconductors in the weakly-degenerate limit. Based on this limit, quantum…
Quantum many-body effects on Rydberg excitons in cuprous oxide
Dirk Semkat, Holger Fehske, Heinrich Stolz
We investigate quantum many-body effects on Rydberg excitons in cuprous oxide induced by the surrounding electron-hole plasma. Line shifts and widths are calculated by full diagona…
Multicomponent exciton gas in cuprous oxide: cooling behaviour and the role of Auger decay
Dirk Semkat, Siegfried Sobkowiak, Florian Schöne +3
In this paper we present a hydrodynamic model to describe the dynamics of para- and orthoexcitons in cuprous oxide at ultralow temperatures inside a stress induced potential trap.…
Condensation of Excitons in Cu2O at Ultracold Temperatures: Experiment and Theory
Heinrich Stolz, Rico Schwartz, Frank Kieseling +7
We present experiments on the luminescence of excitons confined in a potential trap at milli-Kelvin bath temperatures under cw-excitation. They reveal several distinct features lik…
Phase separation of multicomponent excitonic Bose-Einstein condensates
Siegfried Sobkowiak, Dirk Semkat, Heinrich Stolz +2
For the observation of Bose-Einstein condensation, excitons in cuprous oxide are regarded as promising candidates due to their large binding energy and long lifetime. High particle…
Unique signatures for Bose-Einstein condensation in the decay luminescence lineshape of weakly interacting excitons in a potential trap
Heinrich Stolz, Dirk Semkat
We calculate the spatially resolved optical emission spectrum of a weakly interacting Bose gas of excitons confined in a three dimensional potential trap due to interband transitio…