期刊
PHYSICS LETTERS A
卷 369, 期 5-6, 页码 498-502出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.physleta.2007.05.037
关键词
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We investigate spin-dependent transport properties of two-dimensional electron systems modulated by both the stray field from a ferromagnetic metal (FM) stripe and the electrostatic potential (EP) provided by two normal metal Schottky stripes which sandwich the FM stripe. The EP consists of a single barrier and a single well. By switching the gate voltages applied to the Schottky stripes, the barrier and the well exchange their positions. Accordingly, the spatial region, where spin-dependent resonant tunneling happens, is transferred from one side of the FM stripe to the other, resulting in a rotation or a reversal of the spin polarization orientation. (C) 2007 Elsevier B.V. All rights reserved.
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