Observation of spin splitting in single InAs self-assembled quantum dots in AlAs

被引：60

作者：

Thornton, ASG ^{[1
]}

Ihn, T ^{[1
]}

Main, PC ^{[1
]}

Eaves, L ^{[1
]}

Henini, M ^{[1
]}

机构：

[1] Univ Nottingham, Dept Phys, Nottingham NG7 2RD, England

来源：

APPLIED PHYSICS LETTERS | 1998年 / 73卷 / 03期

关键词：

D O I：

10.1063/1.121832

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Using magneto-tunneling spectroscopy, we observe the Zeeman spin splitting of the ground state of a single InAs. quantum dot grown within AlAs. We obtain values for the g factor of different quantum dots between + 0.52+/-0.08 and + 1.6 +/- 0.2, with magnetic field applied in the plant of the dot. This value for the g factor is considerably different from that of bulk InAs (g = - 14.8), and we explain this using a simple three band k.p calculation. Using the spin split states of the dot as a probe, we observe the complete spin polarization of the emitter accumulation layer. (C) 1998 American Institute of Physics.

引用

页码：354 / 356

页数：3