Electron transport in a ferromagnet-superconductor junction on graphene
Yasuhiro Asano, Toshihiro Yoshida, Yukio Tanaka, Alexander A. Golubov
DOI 10.1103/PhysRevB.78.014514 · Physical Review B
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Abstract
In a usual ferromagnet connected with a superconductor, the exchange potential suppresses the superconducting pairing correlation. We show that this common knowledge does not hold in a ferromagnet-superconductor junction on a graphene. When the chemical potential of a graphene is close to the conical point of energy dispersion, the exchange potential rather assists the charge transport through a junction interface. The loose-bottomed electric structure causes this unusual effect.
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