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

doi:10.1088/1674-1056/19/12/127402

Abstract We theoretically studied the nonlocal Andreev reflection with Rashba spin–orbital interaction in a triple-quantum-dot (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 term 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.

Keywords: nonlocal Andreev reflection Rashba spin–orbital interaction spin flip spin precess

Received: 29 April 2010
Revised: 03 July 2010
Accepted manuscript online:

PACS:	71.70.Ej	(Spin-orbit coupling, Zeeman and Stark splitting, Jahn-Teller effect)
	73.21.La	(Quantum dots)

Fund: Project supported by the Natural Science Foundation of Education Bureau of Jiangsu Province of China (Grant Nos. 08KJB140002 and 09KJD430004).

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Peng Ju(彭菊), Yu Hua-Ling(郁华玲), and Zuo Fen(左芬) Nonlocal Andreev reflection with Rashba spin–orbital interaction in a triple-quantum-dot ring 2010 Chin. Phys. B 19 127402

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

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