0.7 Structure in quantum wires observed at crossings of spin-polarised 1D subbands

被引：9
|
作者：
Graham, AC [1 ]
Thomas, KJ [1 ]
Pepper, M [1 ]
Simmons, MY [1 ]
Ritchie, DA [1 ]
机构：
[1] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England
来源：
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES | 2004年 / 22卷 / 1-3期
关键词：
quantum wires; ballistic transport; electron-electron interaction; 0.7; structure;
D O I：
10.1016/j.physe.2003.11.264
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Low-density ballistic 1D wires defined in GaAs/AlGaAs heterostructures show a spontaneous spin-splitting at crossings of Zeeman-split levels induced by an in-plane magnetic field, giving rise to additional unexpected conductance features. From measurements of magnetic field and temperature dependences, we suggest that the mechanism associated with the new features is similar to that of the 0.7 structure observed at zero magnetic field. (C) 2003 Elsevier B.V. All rights reserved.
引用
收藏
页码：264 / 267
页数：4
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