Nonlocal Andreev reflection with Rashba spin-orbital interaction in a triple-quantum-dot ring

• Published in: Chinese physics B Vol. 19; no. 12; pp. 489 - 494
• Main Author: 彭菊 郁华玲 左芬
• Format: Journal Article
• Language: English
• Published: IOP Publishing 01.12.2010
• Subjects: 电子电流; 组成部分; 自旋流; 自旋电流; 自旋轨道相互作用; 自旋进动; 量子点; 非局部
• ISSN: 1674-1056; 2058-3834
• DOI: 10.1088/1674-1056/19/12/127402

We theoretically studied the nonlocal Andreev reflection with Rashba spin-orbital interaction in a triple-quantumdot （QD） ring, which is introduced as Rashba spin-orbital interaction to act locally on one component quantum dot. It is found that the electronic current and spin current are sensitive to the systematic parameters. The interdot spin-flip term does not play a leading role in causing electronic and spin currents. Otherwise the spin precessing terra leads to shift of the peaks of the the spin-up and spin-down electronic currents in different directions and results in the spin current. Moreover, the spin-orbital interaction suppresses the nonlocal Andreev reflection, so we cannot obtain the pure spin current.