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Optic phonons and anisotropic thermal conductivity in hexagonal Ge(2)Sb(2)Te(5)

The lattice thermal conductivity (κ) of hexagonal Ge(2)Sb(2)Te(5) (h-GST) is studied via direct first-principles calculations. We find significant intrinsic anisotropy (κ(a)/κ(c)~2) of κ in bulk h-GST, with the dominant contribution to κ from optic phonons, ~75%. This is extremely unusual as the aco...

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Bibliografiske detaljer
Udgivet i:Sci Rep
Main Authors: Mukhopadhyay, Saikat, Lindsay, Lucas, Singh, David J.
Format: Artigo
Sprog:Inglês
Udgivet: Nature Publishing Group 2016
Fag:
Online adgang:https://ncbi.nlm.nih.gov/pmc/articles/PMC5111060/
https://ncbi.nlm.nih.gov/pubmed/27848985
https://ncbi.nlm.nih.govhttp://dx.doi.org/10.1038/srep37076
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