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	Rashba interaction as an external Yang-Mills field applied to one-dimensional system
	Liu, Chao-xing ; Zhu, Zhen-Gang ; Zhu, Bang-fen
	2010-05-06 ; 2010-05-06
会议名称	PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES ; 12th International Conference on Modulated Semiconductor Structures (MSS12) ; Albuquerque, NM ; Web of Science
关键词	Rashba interaction spin interferometer spin current Yang-Mills field SPIN PHASE SPINTRONICS Nanoscience & Nanotechnology Physics, Condensed Matter
中文摘要	The Rashba interaction in the low-dimensional semiconductor systems, which plays an important role in the spintronics, can be regarded as an external Yang-Mills field. With this viewpoint, the gauge field in a one dimensional (1D)-ring in the presence of the Rashba interaction can be reduced into two independent U(I) fields through an SU(2) transformation, which can also be extended to arbitrary ID Rashba system. As an instance, a two-arms spin interferometer with a quantum dot embedded in one of its arms is considered. By tuning the Rashba interaction, the oscillation of the spin polarization of the current is predicted. Another application is about the persistent spin current in a Rashba ring. Keep the SU(2) gauge field in mind, it is straightforward to find that the persistent spin current may result from the Rashba interaction. (c) 2006 Elsevier B.V. All rights reserved.
会议录出版者	ELSEVIER SCIENCE BV ; AMSTERDAM ; PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
语种	英语 ; 英语
内容类型	会议论文
源URL	[http://hdl.handle.net/123456789/6936]
专题	清华大学
推荐引用方式 GB/T 7714	Liu, Chao-xing,Zhu, Zhen-Gang,Zhu, Bang-fen. Rashba interaction as an external Yang-Mills field applied to one-dimensional system[C]. 见:PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, 12th International Conference on Modulated Semiconductor Structures (MSS12), Albuquerque, NM, Web of Science.

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