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题名: Electric-tunable magneto resistance effect in a two-dimensional electron gas modulated by hybrid magnetic-electric barrier nanostructure
作者: Wang Y;  Chen NF;  Zhang XW;  Chen XF;  Yang XL;  Yin ZG;  Bai YM
发表日期: 2009
摘要: The electric-tunable spin-independent magneto resistance effect has been theoretically investigated in ballistic regime within a two-dimensional electron gas modulated by magnetic-electric barrier nanostructure. By including the omitted stray field in previous investigations oil analogous structures, it is demonstrated based on this improved approximation that the magnetoresistance ratio for the considered structure can be efficiently enhanced by a proper electric barrier up to the maximum value depending on the specific magnetic suppression. Besides, it is also shown the introduction of positive electrostatic modulation can effectively overcome the degradation of magnetoresistance ratio for asymmetric configuration and enhance the visibility of periodic pattern induced by the size effect, while for an opposite modulation the system magnetoresistance ratio concerned may change its sign. (C) 2009 Elsevier B.V. All rights reserved.
KOS主题词: Quantum theory;  Magnetoresistance
刊名: PHYSICS LETTERS A
专题: 中国科学院半导体研究所(2009年前)_期刊论文

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推荐引用方式:
Wang Y ; Chen NF ; Zhang XW ; Chen XF ; Yang XL ; Yin ZG ; Bai YM .Electric-tunable magneto resistance effect in a two-dimensional electron gas modulated by hybrid magnetic-electric barrier nanostructure ,PHYSICS LETTERS A,2009 ,373(22):1983-1987
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