Properties of pseudospin polarization on a graphene-based spin singlet superconducting junction

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 t...

Full description

Saved in:
Bibliographic Details
Published inChinese physics B Vol. 22; no. 8; pp. 606 - 611
Main Author 贾拴稳 王军涛 杨艳岭 白春旭
Format Journal Article
LanguageEnglish
Published 01.08.2013
Subjects
Bias
Fermi surfaces
Ferromagnetism
Polarization
Reflection
Superconductivity
Superconductor junctions
Symmetry
Transport
传输特性
对称性
极化性质
石墨
自旋极化
费米能级
赝自旋
超导结
Online AccessGet full text
ISSN1674-1056
2058-3834
1741-4199
DOI10.1088/1674-1056/22/8/087408

Cover

More Information
Summary: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 cru-ially 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.
Bibliography:graphene, anisotropic pairing symmetry, pseudospin polarization
Jia Shuan-Wen, Wang Jun-Tao, Yang Yan-Ling, and Bai Chun-Xu a） School of Physics, Anyang Normal University, Anyang 455000, China b） Department of Mathematics, Henan Institute of Science and Technology, Xinxiang 453000, China
11-5639/O4
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 cru-ially 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.
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1674-1056
2058-3834
1741-4199
DOI:10.1088/1674-1056/22/8/087408