Spin waves of the spin-polarized electron gas in semimagnetic quantum wells

被引：9
|
作者：
Perez, F
Jusserand, B
Richards, D
Karczewski, G
机构：
[1] Univ Paris 06, CNRS, Inst Nanosci Paris, F-75015 Paris, France
[2] Kings Coll London, Dept Phys, London WC2R 2LS, England
[3] Polish Acad Sci, Inst Phys, PL-02668 Warsaw, Poland
来源：
PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS | 2006年 / 243卷 / 04期
基金：
英国工程与自然科学研究理事会;
关键词：
D O I：
10.1002/pssb.200564603
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Spin flip waves and spin density fluctuations of a two-dimensional spin-polarized electron-gas in a semi-magnetic Cd1-0.008Mn0.008Te quantum well are observed by Resonant Raman Scattering. Application of a magnetic field splits the spin subbands and a static spin polarization is induced. Wavevector and field experimental dispersions are very well reproduced by Local Spin Density Approximation calculations including recent Quantum Monte Carlo evaluation of coulomb correlations corrections. We show how to extract the spin polarization degree. A maximum value of 35% is deduced from measurements. (c) 2006 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
引用
收藏
页码：873 / 877
页数：5
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