All-electric-controlled spin current switching in single-molecule magnet-tunnel junctions

doi:10.1088/1674-1056/20/4/047504

中国物理B ›› 2011, Vol. 20 ›› Issue (4): 47504-047504.doi: 10.1088/1674-1056/20/4/047504

All-electric-controlled spin current switching in single-molecule magnet-tunnel junctions

王瑞强¹, 张正中², 沈瑞², 盛利², 王伯根², 邢定钰²

(1)Laboratory of Quantum Information Technology, ICMP and SPTE, South China Normal University, Guangzhou 510006, China; (2)National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China

收稿日期:2010-12-28 修回日期:2011-01-14 出版日期:2011-04-15 发布日期:2011-04-15
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 60825402, 60421003, 11074111 and 10974058) and the State Key Program for Basic Research of China (Grant Nos. 2011CB922103, 2009CB929504 and 2011CBA00205).

All-electric-controlled spin current switching in single-molecule magnet-tunnel junctions

Zhang Zheng-Zhong(张正中)^a), Shen Rui(沈瑞)^a)^†,Sheng Li(盛利)^a), Wang Rui-Qiang(王瑞强)^b),Wang Bai-Gen(王伯根)^a),and Xing Ding-Yu(邢定钰)^a)

^a National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China; ^b Laboratory of Quantum Information Technology, ICMP and SPTE, South China Normal University, Guangzhou 510006, China

Received:2010-12-28 Revised:2011-01-14 Online:2011-04-15 Published:2011-04-15
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 60825402, 60421003, 11074111 and 10974058) and the State Key Program for Basic Research of China (Grant Nos. 2011CB922103, 2009CB929504 and 2011CBA00205).

摘要/Abstract

摘要： A single-molecule magnet (SMM) coupled to two normal metallic electrodes can both switch spin-up and spin-down electronic currents within two different windows of SMM gate voltage. Such spin current switching in the SMM tunnel junction arises from spin-selected single electron resonant tunneling via the lowest unoccupied molecular orbit of the SMM. Since it is not magnetically controlled but all-electrically controlled, the proposed spin current switching effect may have potential applications in future spintronics.

关键词: molecular magnets, spin polarized transport, single-electron tunneling

Abstract: A single-molecule magnet (SMM) coupled to two normal metallic electrodes can both switch spin-up and spin-down electronic currents within two different windows of SMM gate voltage. Such spin current switching in the SMM tunnel junction arises from spin-selected single electron resonant tunneling via the lowest unoccupied molecular orbit of the SMM. Since it is not magnetically controlled but all-electrically controlled, the proposed spin current switching effect may have potential applications in future spintronics.

Key words: molecular magnets, spin polarized transport, single-electron tunneling

中图分类号: (Molecular magnets)

75.50.Xx

72.25.-b (Spin polarized transport)

张正中, 沈瑞, 盛利, 王瑞强, 王伯根, 邢定钰. All-electric-controlled spin current switching in single-molecule magnet-tunnel junctions[J]. 中国物理B, 2011, 20(4): 47504-047504.

Zhang Zheng-Zhong(张正中), Shen Rui(沈瑞), Sheng Li(盛利), Wang Rui-Qiang(王瑞强), Wang Bai-Gen(王伯根), and Xing Ding-Yu(邢定钰) . All-electric-controlled spin current switching in single-molecule magnet-tunnel junctions[J]. Chin. Phys. B, 2011, 20(4): 47504-047504.

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All-electric-controlled spin current switching in single-molecule magnet-tunnel junctions

All-electric-controlled spin current switching in single-molecule magnet-tunnel junctions

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