Edge-channel transport through quantum wires with a magnetic quantum dot

被引：4

作者：

Sim, HS

Ihm, G

Kim, N

Lee, SJ

Chang, KJ

机构：

[1] Max Planck Inst Phys Complex Syst, D-01187 Dresden, Germany

[2] Chungnam Natl Univ, Dept Phys, Taejon 305764, South Korea

[3] Dongguk Univ, Quantum Funct Semicond Res Ctr, Seoul 100715, South Korea

[4] Korea Adv Inst Sci & Technol, Dept Phys, Taejon 305701, South Korea

来源：

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES | 2002年 / 12卷 / 1-4期

关键词：

electron transport; magnetic quantum dot; nonuniform magnetic field;

D O I：

10.1016/S1386-9477(01)00457-X

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We investigate the scattering of edge channels by a magnetic quantum dot. which is formed by two different magnetic fields B* and B-0 inside and outside the dot, respectively, in a quantum wire. We calculate the two-terminal conductance (G) of the wire and find that for gamma (=B*/B-0) > 0, G is quantized. while for gamma < 0 it is not quantized, This feature results from the different magnetic confinements, caused by nonuniform magnetic fields, between the two cases. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：719 / 721

页数：3

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