OPTICAL FERMI-EDGE SINGULARITIES IN A ONE-DIMENSIONAL ELECTRON-SYSTEM WITH TUNABLE EFFECTIVE-MASS

被引：18
作者：
CALLEJA, JM
GONI, AR
PINCZUK, A
DENNIS, BS
WEINER, JS
PFEIFFER, LN
WEST, KW
机构：
[1] MAX PLANCK INST FESTKORPERFORSCH,D-70506 STUTTGART,GERMANY
[2] AT&T BELL LABS,MURRAY HILL,NJ 07974
来源：
PHYSICAL REVIEW B | 1995年 / 51卷 / 07期
关键词：
D O I：
10.1103/PhysRevB.51.4285
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We have investigated the dependence on the magnetic field of the optical absorption and emission of a one-dimensional (1D) electron gas in GaAs quantum wires with one occupied subband. Spectra show a strong Fermi-edge singularity that narrows as the Fermi energy in the wires is continuously reduced by the enhancement of the effective mass in a perpendicular magnetic field. At high fields, when the cyclotron energy is larger than the 1D subband spacing, the lowest optical transition splits into a doublet due to the spatial modulation of the Landau levels by the wire potential. © 1995 The American Physical Society.
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页码：4285 / 4288
页数：4
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