Glasslike Heat Conduction in High-Mobility Crystalline Semiconductors

Joshua Cohn, G. S. Nolas, V. Fessatidis, T. H. Metcalf, G. A. Slack

Research output: Contribution to journalArticle

534 Citations (Scopus)

Abstract

The thermal conductivity of polycrystalline semiconductors with type-I clathrate hydrate crystal structure is reported. Ge clathrates (doped with Sr and/or Eu) exhibit lattice thermal conductivities typical of amorphous materials. Remarkably, this behavior occurs in spite of the well-defined crystalline structure and relatively high electron mobility (∼100 cm2/V s). The dynamics of dopant ions and their interaction with the polyhedral cages of the structure are a likely source of the strong phonon scattering.

Original languageEnglish (US)
Pages (from-to)779-782
Number of pages4
JournalPhysical Review Letters
Volume82
Issue number4
StatePublished - Jan 25 1999

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clathrates
conductive heat transfer
thermal conductivity
amorphous materials
electron mobility
hydrates
crystal structure
scattering
ions
interactions

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Cohn, J., Nolas, G. S., Fessatidis, V., Metcalf, T. H., & Slack, G. A. (1999). Glasslike Heat Conduction in High-Mobility Crystalline Semiconductors. Physical Review Letters, 82(4), 779-782.

Glasslike Heat Conduction in High-Mobility Crystalline Semiconductors. / Cohn, Joshua; Nolas, G. S.; Fessatidis, V.; Metcalf, T. H.; Slack, G. A.

In: Physical Review Letters, Vol. 82, No. 4, 25.01.1999, p. 779-782.

Research output: Contribution to journalArticle

Cohn, J, Nolas, GS, Fessatidis, V, Metcalf, TH & Slack, GA 1999, 'Glasslike Heat Conduction in High-Mobility Crystalline Semiconductors', Physical Review Letters, vol. 82, no. 4, pp. 779-782.
Cohn J, Nolas GS, Fessatidis V, Metcalf TH, Slack GA. Glasslike Heat Conduction in High-Mobility Crystalline Semiconductors. Physical Review Letters. 1999 Jan 25;82(4):779-782.
Cohn, Joshua ; Nolas, G. S. ; Fessatidis, V. ; Metcalf, T. H. ; Slack, G. A. / Glasslike Heat Conduction in High-Mobility Crystalline Semiconductors. In: Physical Review Letters. 1999 ; Vol. 82, No. 4. pp. 779-782.
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