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Properties of pseudospin polarization on a graphene-based spin singlet superconducting junction |
| Jia Shuan-Wen (贾拴稳)a, Wang Jun-Tao (王军涛)b, Yang Yan-Ling (杨艳岭)a, Bai Chun-Xu (白春旭)a |
a School of Physics, Anyang Normal University, Anyang 455000, China;
b Department of Mathematics, Henan Institute of Science and Technology, Xinxiang 453000, China |
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Abstract We investigate theoretically transport characteristics in a graphene-based pseudospinmagnet/superconductor junction, including the s-wave and the d-wave pairing symmetry potential in the superconducting region. It is found that the pseudospin polarization, in sharp contrast to spin polarization in the graphene-based ferromagnet/superconductor junction, holds no influence on the specular Andreev reflection for a negligible Fermi energy. Furthermore, the Fano factor is crucially affected by the zero bias state. Therefore, we suggest here that the findings could shed light on the realization of graphene-based pseudospintronics devices and provide a new way to detect the specular Andreev reflection and the zero bias state in the actual experiments.
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Received: 24 October 2012
Revised: 28 January 2013
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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74.78.Fk
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(Multilayers, superlattices, heterostructures)
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72.80.Vp
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(Electronic transport in graphene)
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| Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 11147201 and U1204110) and the Key Project of the Chinese Ministry of Education (Grant No. 211100). |
Corresponding Authors:
Bai Chun-Xu
E-mail: chunxu_bai@yahoo.cn
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Cite this article:
Jia Shuan-Wen (贾拴稳), Wang Jun-Tao (王军涛), Yang Yan-Ling (杨艳岭), Bai Chun-Xu (白春旭) Properties of pseudospin polarization on a graphene-based spin singlet superconducting junction 2013 Chin. Phys. B 22 087408
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