Spin and charge density excitations and the collapse of the fractional quantum Hall state at nu=1/3

被引：73

作者：

Davies, HDM

Harris, JC

Ryan, JF

Turberfield, AJ

机构：

[1] Department of Physics, University of Oxford, Clarendon Laboratory, Oxford, OX1 3PU, Parks Road

来源：

PHYSICAL REVIEW LETTERS | 1997年 / 78卷 / 21期

关键词：

D O I：

10.1103/PhysRevLett.78.4095

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Inelastic light scattering from 2D electrons below 100 mK reveals collective charge and spin density excitations of the incompressible electron liquid at Landau level filling factor nu = 1/3 and provides experimental evidence for a magnetoroton minimum in the charge density dispersion curve. The temperature scale for the collapse of electron correlation in the spin-polarized electron liquid is determined by thermal excitation of long-wavelength spin waves.

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页码：4095 / 4098

页数：4

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