Heat transport across the interface between normal metal and d-wave superconductor

Heat conductance and heat current across normal metal/d-wave superconductor (NID) interface are calculated in framework of quasiclassical equations. T he calculations was performed for different values of boundary transparenci es and crystal axis orientation. It is shown that in contrast to N/s-wave b oundary the heat conductance of transparent (D=1) NID interface is consider ably larger and has nonactivated form, Electronic heat current across NID s tructures is also calculated for different interface models taking into acc ount the midgap states and possibility of generating of gapless s-wave stat e in the vicinity of rough NID interface, It is shown that NID junctions ca n not compete with analogous NIS devices [1,2] in microrefigarating and bol ometer applications.