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...
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| Published in | Chinese physics B Vol. 22; no. 8; pp. 606 - 611 |
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| Main Author | |
| Format | Journal Article |
| Language | English |
| Published |
01.08.2013
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1674-1056 2058-3834 1741-4199 |
| DOI | 10.1088/1674-1056/22/8/087408 |
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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 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. |
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| AbstractList | 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. 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. |
| Author | 贾拴稳 王军涛 杨艳岭 白春旭 |
| AuthorAffiliation | School of Physics, Anyang Normal University, Anyang 455000, China Department of Mathematics, Henan Institute of Science and Technology, Xinxiang 453000, China |
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| Cites_doi | 10.1103/PhysRevB.77.041407 10.1103/PhysRevLett.104.136803 10.1103/RevModPhys.80.1337 10.1088/1674-1056/19/6/067301 10.1103/PhysRevB.76.075430 10.1103/PhysRevB.84.214508 10.1088/1674-1056/17/12/049 10.1038/nphys384 10.1103/PhysRevB.86.075443 10.1103/PhysRevB.81.184525 10.1088/1674-1056/21/5/057402 10.1103/PhysRevLett.103.107002 10.1103/PhysRevLett.97.217001 10.1103/PhysRevLett.99.147001 10.1063/1.2717092 10.1209/0295-5075/87/27008 10.1103/PhysRevB.53.16390 10.1103/PhysRevLett.74.1657 10.1103/PhysRevLett.96.086805 10.1038/nature04235 10.1103/PhysRevB.83.115422 10.1038/nphys2181 10.1103/PhysRevB.61.1555 10.1103/PhysRevLett.101.047005 10.1126/science.1102896 10.1021/nl9039636 10.1088/1674-1056/20/10/108503 10.1103/PhysRevLett.100.246808 10.1088/1674-1056/18/12/059 10.1103/PhysRevLett.104.067001 10.1038/nature04233 10.1103/PhysRevLett.102.247204 10.1038/nature05555 10.1103/PhysRevB.76.184514 10.1126/science.1144359 10.1088/1674-1056/19/8/087203 10.1088/1674-1056/21/1/017203 10.1103/PhysRevB.77.064507 10.1103/PhysRevB.77.184507 10.1103/PhysRevLett.107.156801 10.1103/PhysRevLett.95.146801 10.1103/PhysRevLett.97.067007 10.1103/PhysRevB.59.R14165 10.1103/PhysRevLett.98.146801 |
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| DocumentTitleAlternate | Properties of pseudospin polarization on a graphene-based spin singlet superconducting junction |
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| Notes | 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 |
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| References | 22 Wang Z (39) 2009; 18 44 23 45 24 25 Yang Y (35) 2012; 21 26 Min H (18) 2008; 77 27 28 29 Wang Z (40) 2008; 17 Dou X (38) 2010; 19 Liang J (36) 2011; 20 30 31 10 32 11 33 12 34 13 14 15 16 17 Tian H (2) 2012; 21 1 3 Jin B (37) 2010; 19 4 5 6 7 8 9 41 Zhou J (19) 2008 20 21 Zhou J (42) 2009; 87 43 |
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| Snippet | We investigate theoretically transport characteristics in a graphene-based pseudospinmagnet/superconductor junction, including the s-wave and the d-wave... |
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| SubjectTerms | 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 |
| Title | Properties of pseudospin polarization on a graphene-based spin singlet superconducting junction |
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