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.

引用

页码：4285 / 4288

页数：4

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