Heat flow and lattice vibrations in glasses

David G. Cahill; R. O. Pohl

doi:10.1016/0038-1098(89)90630-3

Heat flow and lattice vibrations in glasses

Research output: Contribution to journal › Article › peer-review

Abstract

We show that the first theory of lattice heat conduction, formulated by Einstein in 1911, fits the thermal conductivity of amorphous dielectrics above 50 K with no free parameters. We conclude that Einstein's model, based on localized oscillators coupled by harmonic forces that produce relaxation times of the order of the period of vibration, correctly describes the majority of vibrational modes of glasses in the THz regime.

Original language	English (US)
Pages (from-to)	927-930
Number of pages	4
Journal	Solid State Communications
Volume	70
Issue number	10
DOIs	https://doi.org/10.1016/0038-1098(89)90630-3
State	Published - Jun 1989
Externally published	Yes

ASJC Scopus subject areas

Chemistry(all)
Condensed Matter Physics
Materials Chemistry

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10.1016/0038-1098(89)90630-3

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abstract = "We show that the first theory of lattice heat conduction, formulated by Einstein in 1911, fits the thermal conductivity of amorphous dielectrics above 50 K with no free parameters. We conclude that Einstein's model, based on localized oscillators coupled by harmonic forces that produce relaxation times of the order of the period of vibration, correctly describes the majority of vibrational modes of glasses in the THz regime.",

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AU - Pohl, R. O.

PY - 1989/6

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DO - 10.1016/0038-1098(89)90630-3

M3 - Article

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Heat flow and lattice vibrations in glasses

Abstract

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