Magnetic field-induced effects in the high source-drain bias current of weakly coupled vertical quantum dot molecules

被引：5

作者：

Austing, D. G. ^{[1
,2
]}

Payette, C. ^{[1
,2
]}

Yu, G. ^{[1
]}

Gupta, J. A. ^{[1
]}

机构：

[1] Natl Res Council Canada, Inst Microstruct Sci M50, Ottawa, ON K1A 0R6, Canada

[2] McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada

来源：

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES | 2008年 / 40卷 / 05期

基金：

加拿大自然科学与工程研究理事会;

关键词：

coupled quantum dots; hyperfine coupling; hysteresis; single-electron tunneling;

D O I：

10.1016/j.physe.2007.08.030

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We report on the basic properties of recently observed magnetic field resonance, induced time-dependent oscillation, and hysteresis effects in the current flowing through two weakly coupled vertical quantum dots at high source-drain bias (up to a few tens of mV). These effects bare some similarity to those reported in the N = 2 spin-blockade regime, usually for weak in-plane magnetic field, of quantum dot molecules and attributed to hyperfine coupling, except here the measurements are conducted outside of the spin-blockade regime and the out-of-plane magnetic field is up to similar to 6 T. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：1118 / 1120

页数：3