Spin Currents in Diluted Magnetic Semiconductors

被引：56

作者：

Ganichev, S. D. ^{[1
]}

Tarasenko, S. A. ^{[2
]}

Bel'kov, V. V. ^{[2
]}

Olbrich, P. ^{[1
]}

Eder, W. ^{[1
]}

Yakovlev, D. R. ^{[2
,3
]}

Kolkovsky, V. ^{[4
]}

Zaleszczyk, W. ^{[4
]}

Karczewski, G. ^{[4
]}

Wojtowicz, T. ^{[4
]}

Weiss, D. ^{[1
]}

机构：

[1] Univ Regensburg, Terahertz Ctr, D-93040 Regensburg, Germany

[2] Russian Acad Sci, AF Ioffe Physicotech Inst, St Petersburg 194021, Russia

[3] TU Dortmund Univ, D-44221 Dortmund, Germany

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

来源：

PHYSICAL REVIEW LETTERS | 2009年 / 102卷 / 15期

关键词：

D O I：

10.1103/PhysRevLett.102.156602

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study zero-bias spin separation in (Cd,Mn)Te/(Cd,Mg)Te diluted magnetic semiconductor structures. The spin current generated by electron gas heating under terahertz radiation is converted into a net electric current by applying an external magnetic field. The experiments show that the spin polarization of the magnetic ion system enhances drastically the conversion process due to giant Zeeman splitting of the conduction band and spin-dependent electron scattering on localized Mn2+ ions.

引用

页数：4

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