Journal
APPLIED PHYSICS LETTERS
Volume 95, Issue 14, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3242349
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First principles calculation and a statistical model are employed to calculate the thermal conductance (TC) of the interfaces GaN/Si and GaN/SiC. For an interface with zero tangential correlation length (L), TC of both GaN/Si and GaN/SiC increases with increasing the interface roughness. For an infinite L, TC of GaN/Si is almost insensitive to the roughness, while TC of GaN/SiC decreases rapidly with increasing the interface roughness. Generally speaking, for L=0, TC increases with increasing the interface roughness, whereas, for L=infinity the effect of the interface roughness on the interface TC depends on the phonon characteristics of the materials in contact. (C) 2009 American Institute of Physics. [doi: 10.1063/1.3242349]
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