Coherently photoinduced ferromagnetism in diluted magnetic semiconductors -: art. no. 127201

被引：38

作者：

Fernández-Rossier, J

Piermarocchi, C

Chen, P

MacDonald, AH

Sham, LJ

机构：

[1] Univ Texas, Dept Phys, Austin, TX 78712 USA

[2] Univ Alicante, Dept Fis Aplicada, Alicante 03690, Spain

[3] Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA

[4] Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA

[5] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 93卷 / 12期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevLett.93.127201

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Ferromagnetism is predicted in undoped diluted magnetic semiconductors illuminated by intense sub-band-gap laser radiation . The mechanism for photoinduced ferromagnetism is coherence between conduction and valence bands induced by the light which leads to an optical exchange interaction. The ferromagnetic critical temperature T-C depends both on the properties of the material and on the frequency and intensity of the laser and could be above 1K.

引用

收藏

页码：127201 / 1

页数：4

相关论文

共 27 条

[1] Larmor precession of Mn2+ moments initiated by the exchange field of photoinjected carriers in CdTe/Cd1-xMnxTe quantum wells [J].

Akimoto, R ;

Ando, K ;

Sasaki, F ;

Kobayashi, S ;

Tani, T .

PHYSICAL REVIEW B, 1998, 57 (12) :7208-7213

[2] Optically induced multispin entanglement in a semiconductor quantum well [J].

Bao, JM ;

Bragas, AV ;

Furdyna, JK ;

Merlin, R .

NATURE MATERIALS, 2003, 2 (03) :175-179

[3] Light and electric field control of ferromagnetism in magnetic quantum structures [J].

Boukari, H ;

Kossacki, P ;

Bertolini, M ;

Ferrand, D ;

Cibert, J ;

Tatarenko, S ;

Wasiela, A ;

Gaj, JA ;

Dietl, T .

PHYSICAL REVIEW LETTERS, 2002, 88 (20) :4-207204

[4] EXCITONIC REFERENCE STATE OF A MODEL SEMICONDUCTOR IN THE DYNAMIC STARK REGIME [J].

COMTE, C ;

MAHLER, G .

PHYSICAL REVIEW B, 1988, 38 (15) :10517-10523

[5] Optical spin resonance and transverse spin relaxation in magnetic semiconductor quantum wells [J].

Crooker, SA ;

Awschalom, DD ;

Baumberg, JJ ;

Flack, F ;

Samarth, N .

PHYSICAL REVIEW B, 1997, 56 (12) :7574-7588

[6] Zener model description of ferromagnetism in zinc-blende magnetic semiconductors [J].

Dietl, T ;

Ohno, H ;

Matsukura, F ;

Cibert, J ;

Ferrand, D .

SCIENCE, 2000, 287 (5455) :1019-1022

[7] DYNAMICS OF SPIN ORGANIZATION IN DILUTED MAGNETIC SEMICONDUCTORS [J].

DIETL, T ;

PEYLA, P ;

GRIESHABER, W ;

DAUBIGNE, YM .

PHYSICAL REVIEW LETTERS, 1995, 74 (03) :474-477

[8] Theory of ferromagnetism in planar heterostructures of (Mn,III)-V semiconductors -: art. no. 235323 [J].

Fernández-Rossier, J ;

Sham, LJ .

PHYSICAL REVIEW B, 2001, 64 (23)

[9] Spin degree of freedom in two dimensional exciton condensates [J].

FernandezRossier, J ;

Tejedor, C .

PHYSICAL REVIEW LETTERS, 1997, 78 (25) :4809-4812

[10] Injection and detection of a spin-polarized current in a light-emitting diode [J].

Fiederling, R ;

Keim, M ;

Reuscher, G ;

Ossau, W ;

Schmidt, G ;

Waag, A ;

Molenkamp, LW .

NATURE, 1999, 402 (6763) :787-790