Dimensionally constrained D'yakonov-Perel' spin relaxation in n-InGaAs channels: transition from 2D to 1D

被引：29

作者：

Holleitner, A. W.

Sih, V.

Myers, R. C.

Gossard, A. C.

Awschalom, D. D. ^{[1
]}

机构：

[1] Univ Calif Santa Barbara, Ctr Spintron & Quantum Computat, Santa Barbara, CA 93106 USA

[2] Univ Munich, Dept Phys, D-80539 Munich, Germany

[3] Univ Munich, Ctr NanoSci CeNS, D-80539 Munich, Germany

来源：

NEW JOURNAL OF PHYSICS | 2007年 / 9卷

关键词：

D O I：

10.1088/1367-2630/9/9/342

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We investigate both the spin dynamics and the magnetotransport properties of two- dimensional ( 2D) n- InGaAs channels as a function of the channel width. We find that the electron spin scattering in the channels is limited by a dimensionally constrained D'yakonov - Perel' mechanism, while the magnetotransport reveals purely 2D behaviour. For submicron channels the spin relaxation times increase for decreasing widths, while the magnetotransport data exhibit no band bending effects for the investigated samples. Temperature and photon energy dependent measurements rule out dissipative effects and further corroborate the experimental observation of a dimensionally constrained spin relaxation.

引用

页数：12

共 43 条

[1] Giant spin relaxation anisotropy in zinc-blende heterostructures [J].