Optical spectra of exciton condensates in semiconductor quantum wells
Department of Physics and Materials Research Laboratory,
University of Illinois at Urbana-Champaign - 1110 West Green Street, Urbana, IL 61801-3080, USA
Accepted: 9 July 1996
We present theoretical calculations of optical absorption/gain spectra for condensed excitons in semiconductor quantum wells as functions of the electron-hole pair density and temperature. The ladder diagram contribution to the vertex function (exciton effect) is included in our calculation. Our studies show that the effects of exciton condensation on the absorption/gain spectra remain present for temperatures up to 130 K for a 2D ZnSe system and the exciton effects are important in determining the absorption/gain spectra.
PACS: 74.20.Fg – BCS theory and its development / 78.20.Bh – General theory (for pure homogeneous materials) / 78.66.Fd – III-V semiconductors
© EDP Sciences, 1996