Anisotropic magnetoresistance in a two-dimensional electron gas in a quasirandom magnetic field

被引：7
|
作者：
Rushforth, AW
Gallagher, BL
Main, PC
Neumann, AC
Henini, M
Marrows, CH
Hickey, BJ
机构：
[1] Univ Nottingham, Sch Phys & Astron, Nottingham NG7 2RD, England
[2] Univ Leeds, Dept Phys, Leeds LS2 9JT, W Yorkshire, England
来源：
PHYSICAL REVIEW B | 2004年 / 70卷 / 19期
基金：
英国工程与自然科学研究理事会;
关键词：
D O I：
10.1103/PhysRevB.70.193313
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We present magnetotransport results for a two-dimensional electron gas (2DEG) subject to the quasirandom magnetic field produced by randomly positioned submicron Co dots deposited onto the surface of a GaAs/AlxGa1-xAs heterostructure. We observe strong local and nonlocal anisotropic magnetoresistance for external magnetic fields in the plane of the 2DEG. Monte Carlo calculations confirm that this is due to the changing topology of the quasirandom magnetic field in which electrons are guided predominantly along contours of zero magnetic field.
引用
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页码：1 / 4
页数：4
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