Open AccessMagnetic field effect of charged excitons in n-doped ZnSe/BeTe type-Ⅱ quantum wells
Author(s) -
冀子武,
三野弘文,
音贤一,
室清文,
秋本良一,
嶽山正二郎
Publication year - 2008
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.57.6609
Subject(s) - exciton , photoluminescence , magnetic field , spectral line , condensed matter physics , quantum well , doping , physics , reflection (computer programming) , materials science , atomic physics , optics , laser , quantum mechanics , astronomy , computer science , programming language
We report results of the reflection (type-I, in ZnSe layer) and photoluminescence (PL) spectra (type-Ⅱ) measurements performed on n-doped ZnSe/BeTe/ZnSe type-Ⅱ quantum well structures at low temperature (5—10 K). The reflection spectra show a typical charged exciton (X-) feature. The PL spectra show an asymmetry of the peak, which is a characteristic feature for a charged exciton type transition. The dependence of the PL peak energy on the in-plane magnetic field is considered to be due to the magnetic-field-induced displacement of interlayer negatively charged exciton dispersion in momentum space.