Thermal transport across nanosized constrictions is calculated considering wave effects. It is shown that Rayleigh-type phonon diffraction reduces thermal transport across nanosized constrictions at low temperatures. We show that for aT/vDebye<0.01×10−9KsaT∕vDebye<0.01×10−9Ks, where aa is the radius of the constriction, TT the temperature, and vDebyevDebye the Debye velocity of the solid material, diffraction effects are important.
BT - Applied Physics Letters DA - 01/2007 DO - 10.1063/1.2794428 IS - 14 LA - eng N2 -Thermal transport across nanosized constrictions is calculated considering wave effects. It is shown that Rayleigh-type phonon diffraction reduces thermal transport across nanosized constrictions at low temperatures. We show that for aT/vDebye<0.01×10−9KsaT∕vDebye<0.01×10−9Ks, where aa is the radius of the constriction, TT the temperature, and vDebyevDebye the Debye velocity of the solid material, diffraction effects are important.
PY - 2007 EP - 143119 ST - Appl. Phys. Lett. T2 - Applied Physics Letters TI - Diffraction-limited phonon thermal conductance of nanoconstrictions UR - http://aip.scitation.org/doi/10.1063/1.2794428 VL - 91 SN - 0003-6951 ER -