Long-lived spin polarisation in the charged InP quantum dots

被引：18

作者：

Ignatiev, IV

Gerlovin, IY

Ikezawa, M

Kalevich, VK

Verbin, SY

Masumoto, Y

机构：

[1] St Petersburg State Univ, Inst Phys, St Petersburg 198504, Russia

[2] Univ Tsukuba, Venture Business Lab, Tsukuba, Ibaraki 3058571, Japan

[3] Univ Tsukuba, Inst Phys, Tsukuba, Ibaraki 3058571, Japan

[4] SI Vavilov State Opt Inst, St Petersburg 190034, Russia

[5] AF Ioffe Phys Tech Inst, St Petersburg 194021, Russia

来源：

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES | 2003年 / 17卷 / 1-4期

关键词：

quantum dots; spin polarisation; magnetic field; bias;

D O I：

10.1016/S1386-9477(02)00811-1

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

This work is aimed at the investigation of the spin relaxation in controllably charged quantum dots (QDs). Measuring the dependence of the spin lifetime on the gate voltage in a heterostructure containing InP QDs, we detected the onset of spin conservation when the QD became negatively charged. The spin lifetime in the charged QDs exceeded 1 ns. Various properties of the long-lived spin polarisation of the QDs in longitudinal magnetic field as well as under various excitation conditions are discussed. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：361 / 364

页数：4

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