Calculation of Si nanowire thermal conductivity using complete phonon dispersion relations

By Natalio Mingo. 2003

376 citations recorded by the source corpus.

The lattice thermal conductivity of crystalline Si nanowires is calculated. The calculation uses complete phonon dispersions, and does not require any externally imposed frequency cutoffs. No adjustment to nanowire thermal conductivity measurements is required. Good agreement with experimental results for nanowires wider than 35 nm is obtained. A formulation in terms of the transmission function is given. Also, the use of a simpler, nondispersive ``Callaway formula,'' is discussed from the complete dispersions perspective.

Subfields: Atomic and Molecular Physics, and Optics, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/36d2a6c9e11133cd6beef5dc8111b354c9ab6774

Citations in the corpus

• Phonon hydrodynamics and its applications in nanoscale heat transport (2015, neutral): “[123] B1,iω(2)T exp  −θD,i/3T  (i = L, T ) B2,Lω(2)T 3 B2,TωT 4 Aiω(4) (i = L, T ) vg, i/Leff (i = L, T ) Mingo [76,119] Neglected Bω2T exp (−C/T ) Aω4 vg/FL Chantrenne et al.”