Open AccessSTUDY ON CYCLOTRON RESONANCE SPECTRA OF TWO-DIMENSIONAL ELECTRON GASES IN PSEUDOMORPHIC InxGa1-xAs/In0.52Al0.48As HETEROJUNCTIONS
Author(s) -
Zhanghai Chen,
Hu Can-Ming,
Jianxin Chen,
Guoliang Shi,
Pulin Liu,
Xuechu Shen,
Aizhen Li
Publication year - 1998
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.47.1018
Subject(s) - scattering , cyclotron resonance , electron , condensed matter physics , spectral line , heterojunction , fermi gas , materials science , impurity , atomic physics , shubnikov–de haas effect , cyclotron , physics , quantum oscillations , optics , quantum mechanics , astronomy
The electron effective masses, scattering time and mobilities near the Fermi level for the lowest two subbands of the two-dimensional electron gases in a pseudomorphic In0.80Ga0.20As/In0.53Ga0.47As/In0.52Al0.48AsHEMT structure are determined by fitting the cyclotron resonance spectra. The significant enhancement of the electron effective masses, resulting from the conduction band nonparabolicity and the wave function penetration, is observed. The evident subband dependencies of the electron scattering time and mobilities dominated by the alloy scattering and ionized impurities scattering are also discussed.