Heat Transport in Graphene Ferromagnet-Insulator-Superconductor Junctions
LI Xiao-Wei
1School of Physics and Electronic Electrical Engineering, Huaiyin Normal University, Huai'an 223300 2State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050
Heat Transport in Graphene Ferromagnet-Insulator-Superconductor Junctions
LI Xiao-Wei
1School of Physics and Electronic Electrical Engineering, Huaiyin Normal University, Huai'an 223300 2State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050
摘要We study heat transport in a graphene ferromagnet-insulator-superconducting junction. It is found that the thermal conductance of the graphene ferromagnet-insulator-superconductor (FIS) junction is an oscillatory function of the barrier strength χ in the thin−barrier limit. The gate potential U0 decreases the amplitude of thermal conductance oscillation. Both the amplitude and phase of the thermal conductance oscillation varies with the exchange energy Eh. The thermal conductance of a graphene FIS junction displays the usual exponential dependence on temperature, reflecting the s-wave symmetry of superconducting graphene.
Abstract：We study heat transport in a graphene ferromagnet-insulator-superconducting junction. It is found that the thermal conductance of the graphene ferromagnet-insulator-superconductor (FIS) junction is an oscillatory function of the barrier strength χ in the thin−barrier limit. The gate potential U0 decreases the amplitude of thermal conductance oscillation. Both the amplitude and phase of the thermal conductance oscillation varies with the exchange energy Eh. The thermal conductance of a graphene FIS junction displays the usual exponential dependence on temperature, reflecting the s-wave symmetry of superconducting graphene.
(Superconducting films and low-dimensional structures)
引用本文:
LI Xiao-Wei
. Heat Transport in Graphene Ferromagnet-Insulator-Superconductor Junctions[J]. 中国物理快报, 2011, 28(4): 47401-047401.
LI Xiao-Wei
. Heat Transport in Graphene Ferromagnet-Insulator-Superconductor Junctions. Chin. Phys. Lett., 2011, 28(4): 47401-047401.
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2011, Vol. 28 
