Single dot and strongly coupled double dots at high magnetic fields

被引：9

作者：

Austing, DG

Tamura, H

Tokura, Y

Muraki, K

Amaha, S

Ono, K

Tarucha, S

机构：

[1] Nippon Telegraph & Tel Corp, Basic Res Labs, Atsugi, Kanagawa 2430198, Japan

[2] Univ Tokyo, Dept Phys, Bunkyo Ku, Tokyo 1130033, Japan

[3] Nippon Telegraph & Tel Corp, Basic Res Labs, ERATO, Mesoscop Correlat Project, Atsugi, Kanagawa 2430198, Japan

来源：

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES | 2001年 / 10卷 / 1-3期

关键词：

quantum dots; artificial atoms; artificial molecules; maximum density droplet;

D O I：

10.1016/S1386-9477(01)00064-9

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Circular vertical semiconductor single quantum dot artificial atoms and strongly coupled double quantum dot artificial molecules are investigated at high magnetic (B-) fields up to 10 T. The phase diagrams showing the evolution with B-field of the conductance peaks reflecting the electro-chemical potential of the N-electron ground states for N from zero to about 20 are compared, and the origin of the differences is discussed. Tn particular, the stability of the spin-polarized maximum density droplet (MDD) at filling factor, v = 1, is much reduced in the double dot system compared to the single dot system. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

收藏

页码：112 / 116

页数：5

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