INCOMPRESSIBLE ELECTRON LIQUID STATES STUDIED BY OPTICAL SPECTROSCOPY

被引：40

作者：

TURBERFIELD, AJ

FORD, RA

HARRIS, IN

RYAN, JF

FOXON, CT

HARRIS, JJ

机构：

[1] UNIV NOTTINGHAM,DEPT PHYS,NOTTINGHAM NG7 2RD,ENGLAND

[2] UNIV LONDON IMPERIAL COLL SCI TECHNOL & MED,SEMICOND MAT IRC,LONDON SW7 2BZ,ENGLAND

来源：

PHYSICAL REVIEW B | 1993年 / 47卷 / 08期

关键词：

D O I：

10.1103/PhysRevB.47.4794

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Luminescence spectroscopy is very sensitive to electron correlation in two-dimensional (2D) systems: intensity modulation clearly identifies hierarchies of fractional quantum Hall states. We report measurements that reveal that the interaction between 2D electrons and a photoexcited valence-band hole, which is of fundamental importance in determining the recombination spectrum, is enhanced in a low-density 2D electron system. As a result, the luminescence energy is insensitive to the electron ground state in this system and a distinct Fermi-edge singularity is observed at zero and low magnetic fields.

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页码：4794 / 4797

页数：4

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