Light and electric field control of ferromagnetism in magnetic quantum structures

被引：167

作者：

Boukari, H

Kossacki, P

Bertolini, M

Ferrand, D

Cibert, J

Tatarenko, S

Wasiela, A

Gaj, JA

Dietl, T

机构：

[1] Univ Grenoble 1, CNRS, UMR 55 88, Spectrometrie Phys Lab, F-38402 St Martin Dheres, France

[2] Univ Warsaw, Inst Expt Phys, PL-00681 Warsaw, Poland

[3] Polish Acad Sci, Inst Phys, PL-02668 Warsaw, Poland

来源：

PHYSICAL REVIEW LETTERS | 2002年 / 88卷 / 20期

关键词：

D O I：

10.1103/PhysRevLett.88.207204

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A strong influence of illumination and electric bias on the Curie temperature and saturation value of the magnetization is demonstrated for semiconductor structures containing a modulation-doped p-type Cd-0.96 Mn-0.04 Te quantum well placed in various built-in electric fields. It is shown that both light beam and bias voltage generate an isothermal and reversible crossover between the paramagnetic and ferromagnetic phases, in the way that is predetermined by the structure design. The observed behavior is in quantitative agreement with the expectations for systems, in which ferromagnetic interactions are mediated by the weakly disordered two-dimensional hole liquid.

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页码：4 / 207204

页数：4

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