Spin-dependent energy relaxation inside a quantum dot

被引：7

作者：

Fujisawa, T

Tokura, Y

Austing, DG

Hirayama, Y

Tarucha, S

机构：

[1] NTT Corp, NTT Basic Res Labs, Atsugi, Kanagawa 2430198, Japan

[2] CREST, Kawaguchi 3310012, Japan

[3] Univ Tokyo, Bunkyo Ku, Tokyo 1130033, Japan

[4] ERATO, Mesoscop Correlat Project, Atsugi, Kanagawa 2430198, Japan

来源：

PHYSICA B-CONDENSED MATTER | 2002年 / 314卷 / 1-4期

关键词：

quantum dot; electron spin; energy relaxation; coulomb blockade;

D O I：

10.1016/S0921-4526(01)01444-2

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We employ pulse excitation measurements in order to investigate spin-dependent energy relaxation inside a quantum dot. A fast pulse signal is applied to a gate electrode in order to excite a quantum dot, and the induced transient current is analyzed in terms of energy relaxation. We describe transient current measurements on a lateral quantum dot, in which the tunneling rates are controllable with gate voltages, and on a vertical quantum dot, in which the total number of electrons and total spin can be well identified. The spin-conservation rule during energy relaxation is clearly identified. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：224 / 229

页数：6

共 14 条

[1] PHONON-SCATTERING BETWEEN ZERO-DIMENSIONAL ELECTRONIC STATES - SPATIAL VERSUS LANDAU QUANTIZATION [J].