Pairing symmetry of superconducting graphene |
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| Authors: | F MD Pellegrino G GN Angilella and R Pucci |
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| Institution: | (1) Division of Physics, Graduate School of Science, Hokkaido University, Sapporo 060-0810, Japan;(2) Department of Advanced Materials Science, University of Tokyo, Kashiwa Chiba, 277-8581, Japan;(3) Institute for Solid State Physics, University of Tokyo, Kashiwa Chiba, 277-8581, Japan; |
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| Abstract: | The possibility of intrinsic superconductivity in alkali-coated graphene
monolayers has been recently suggested theoretically. Here, we derive the
possible pairing symmetries of a carbon honeycomb lattice and discuss their
phase diagram. We also evaluate the superconducting local density of states
(LDOS) around an isolated impurity. This is directly related to scanning
tunneling microscopy experiments, and may evidence the occurrence of
unconventional superconductivity in graphene. |
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