Spin diffusion in doped semiconductors: The role of Coulomb interactions

被引：61

作者：

D'Amico, I

Vignale, G

机构：

[1] Inst Sci Interchange, I-10133 Turin, Italy

[2] Univ Missouri, Dept Phys, Columbia, MO 65211 USA

来源：

EUROPHYSICS LETTERS | 2001年 / 55卷 / 04期

关键词：

D O I：

10.1209/epl/i2001-00453-y

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We examine the effect of Coulomb interaction on the mobility and diffusion of spin packets in doped semiconductors. We nd that the diffusion constant is reduced, relative to its non-interacting value, by the combined effect of Coulomb-enhanced spin susceptibility and spin Coulomb drag. In ferromagnetic semiconductors, the spin diffusion constant vanishes at the ferromagnetic transition temperature.

引用

收藏

页码：566 / 572

页数：7

相关论文

共 18 条

[1] Electron spin and optical coherence in semiconductors [J].

Awschalom, DD ;

Kikkawa, JM .

PHYSICS TODAY, 1999, 52 (06) :33-38

[2] GROUND-STATE OF THE ELECTRON-GAS BY A STOCHASTIC METHOD [J].

CEPERLEY, DM ;

ALDER, BJ .

PHYSICAL REVIEW LETTERS, 1980, 45 (07) :566-569

[3]

CEPERLEY DM, 1982, INT J QUANTUM CHEM, V16, P49

[4] Theory of spin Coulomb drag in spin-polarized transport [J].

D'Amico, I ;

Vignale, G .

PHYSICAL REVIEW B, 2000, 62 (08) :4853-4857

[5] Spin diffusion in semiconductors [J].

Flatté, ME ;

Byers, JM .

PHYSICAL REVIEW LETTERS, 2000, 84 (18) :4220-4223

[6] Interlayer coupling in ferromagnetic semiconductor superlattices [J].

Jungwirth, T ;

Atkinson, WA ;

Lee, BH ;

MacDonald, AH .

PHYSICAL REVIEW B, 1999, 59 (15) :9818-9821

[7] Lateral drag of spin coherence in gallium arsenide [J].

Kikkawa, JM ;

Awschalom, DD .

NATURE, 1999, 397 (6715) :139-141

[8] Room-temperature spin memory in two-dimensional electron gases [J].

Kikkawa, JM ;

Smorchkova, IP ;

Samarth, N ;

Awschalom, DD .

SCIENCE, 1997, 277 (5330) :1284-1287

[9] Resonant spin amplification in n-type GaAs [J].

Kikkawa, JM ;

Awschalom, DD .

PHYSICAL REVIEW LETTERS, 1998, 80 (19) :4313-4316

[10] Magneto-optical properties of Zn0.95Mn0.05Se/Zn0.76Be0.08Mg0.16Se quantum wells and Zn0.91Mn0.09Se/Zn0.972Be0.028Se spin superlattices [J].

König, B ;

Zehnder, U ;

Yakovlev, DR ;

Ossau, W ;

Gerhard, T ;

Keim, M ;

Waag, A ;

Landwehr, G .

PHYSICAL REVIEW B, 1999, 60 (04) :2653-2660