@article {Nika:2009:1555-130X:170,
title = "Lattice Thermal Conductivity of Ultra-Thin Freestanding Layers: Face-Centered Cubic Cell Model versus Continuum Approach",
journal = "Journal of Nanoelectronics and Optoelectronics",
parent_itemid = "infobike://asp/jno",
publishercode ="asp",
year = "2009",
volume = "4",
number = "1",
publication date ="2009-04-01T00:00:00",
pages = "170-173",
itemtype = "ARTICLE",
issn = "1555-130X",
eissn = "1555-1318",
url = "https://www.ingentaconnect.com/content/asp/jno/2009/00000004/00000001/art00018",
doi = "doi:10.1166/jno.2009.1018",
keyword = "NANOSTRUCTURE, THERMAL CONDUCTIVITY, SILICON, ACOUSTIC PHONONS",
author = "Nika, Denis L. and Zincenco, Nadejda D. and Pokatilov, Evghenii P.",
abstract = "In the presented paper we report on the calculation of the lattice thermal conductivity of ultra-thin freestanding Si layers using face-centered cubic cell lattice dynamic model and continuum approach for acoustic phonons. The detailed comparison between phonon energy spectra and group velocities obtained in both models is realized. It has been demonstrated that the continuum approach significantly overestimates the lattice thermal conductivity for medium and high temperatures due to the overstating of average group velocities for high-energy phonon modes. The obtained results can be used for the accurate description of the phonon thermal transport in nanostructures.",
}