Heat transport by Dirac fermions in normal/superconducting graphene junctions
arXiv:0801.2446 · doi:10.1103/PhysRevB.77.132503
Abstract
We study heat transport in normal/superconducting graphene junctions. We find that while the thermal conductance displays the usual exponential dependence on temperature, reflecting the s-wave symmetry of the superconductor, it exhibits an unusual oscillatory dependence on the potential height or the length of the barrier region. This oscillatory dependence stems from the emergent low-energy relativistic nature of fermions in graphene, essentially different from the result in conventional normal metal/superconductor junctions.
4 pages, 3 figures
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