| SPECIAL TOPIC—60th Anniversary of Department of Physics of Nanjing Normal University |
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The nonlocal transport and switch effect in light- and electric-controlled silicene-superconductor hybrid structure |
| Fenghua Qi(戚凤华)1,2, Jun Cao(曹军)1,2, Jie Cao(曹杰)3, Lifa Zhang(张力发)1 |
1 Center for Quantum Transport and Thermal Energy Science, School of Physics and Technology, Nanjing Normal University, Nanjing 210023, China;
2 School of Electronic Engineering, Nanjing Xiaozhuang University, Nanjing 211171, China;
3 College of Science, Hohai University, Nanjing 210098, China |
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Abstract We theoretically investigate the influence of off-resonant circularly polarized light field and perpendicular electric field on the quantum transport in a monolayer silicene-based normal/superconducting/normal junction. Owing to the tunable band structure of silicene, a pure crossed Andreev reflection process can be realized under the optical and electrical coaction. Moreover, a switch effect among the exclusive crossed Andreev reflection, the exclusive elastic cotunneling and the exclusive Andreev reflection, where the former two are the nonlocal transports and the third one is the local transport, can be obtained in our system by the modulation of the electric and light fields. In addition, the influence of the relevant parameters on the nonlocal and local transports is calculated and analyzed as well.
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Received: 22 August 2018
Revised: 02 November 2018
Accepted manuscript online:
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PACS:
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74.45.+c
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(Proximity effects; Andreev reflection; SN and SNS junctions)
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73.23.Ad
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(Ballistic transport)
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85.25.-j
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(Superconducting devices)
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| Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 11504084 and 11647164) and the Natural Science Foundation for Colleges and Universities in Jiangsu Province, China (Grant Nos. 18KJB140005, 17KJD170004, and 16KJB140008). |
Corresponding Authors:
Lifa Zhang
E-mail: phyzlf@njnu.edu.cn
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Cite this article:
Fenghua Qi(戚凤华), Jun Cao(曹军), Jie Cao(曹杰), Lifa Zhang(张力发) The nonlocal transport and switch effect in light- and electric-controlled silicene-superconductor hybrid structure 2018 Chin. Phys. B 27 127401
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