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arXiv · 0710.3962

d+id'-wave Superconducting States in Graphene

Yongjin Jiang·Dao-Xin Yao·E. W. Carlson·Han-Dong Chen·JiangPing Hu
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Abstract

We show that effective superconducting orders generally emerge at low energy in the superconducting state of graphene with conventionally defined pairing symmetry . We study such a particular interesting example, the $d_{x^2-y^2}+id'_{xy}$ spin singlet pairing superconducting state in graphene, which can be generated by electronic correlation as well as induced through a proximity effect with a d-wave superconductor. We find that effectively the d-wave state is a state with mixed s-wave and exotic $p+ip$-wave pairing orders at low energy. This remarkable property leads to distinctive superconducting gap functions and novel behavior of the Andreev conductance spectra.

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Yongjin Jiang, Dao-Xin Yao, E. W. Carlson, Han-Dong Chen, JiangPing Hu. 2007-10-22. d+id'-wave Superconducting States in Graphene. https://doi.org/10.1103/physrevb.77.235420

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