Cited by 47High-pressure geophysics and materialsThermodynamic and Structural Properties of Metals and AlloysThermal Expansion and Ionic Conductivity

Lattice dynamics of Ge and Si using the Born-von Karman model

Zdetsis, A. D., Wang, C. S.·1979·Physical Review B

Abstract

The Born-von Karman model of lattice dynamics of diamond structure has been extended to include up to 12th-neighbor interactions. Applications to Ge and Si using eighth-neighbor interactions have been carried out. We obtained very good fits to the experimental values of phonon dispersion curves and elastic constants. However, in agreement with the conclusions of Herman, a reasonable fit can only be obtained using at least up to fifth-neighbor interactions. The special significance of the fifth neighbor is attributed to its structure. With the fitted force constants, we have calculated the phonon density of states using the high-resolution Gilat-Raubenheimer method. The calculated Debye temperatures and specific heats compare well with the experimental values.

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Crossref · 10.1103/physrevb.19.2999

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  • The total thermal conductance G1 + G2 = 458 MW m−2 K−1 at room temperature matched the DMM prediction, even without considering serial interfacial thermal resistance from electron-phonon interactions within the Al layer.

    “The total thermal conductance G 1 + G 2 = 458 MW m -2 K -1 matched the value predicted by the DMM [20], even without considering the serial interfacial thermal resistance from electron-phonon interactions within the Al layer [34].”

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Authors
Zdetsis, A. D., & Wang, C. S.
Affiliations
Franklin Institute (US)
Venue
Physical Review B
Published
1979-03-15
Volume
19
Issue
6
Pages
2999-3003
ISSN
0163-1829 (ISSN-L)
OpenAlex
W2070933363
Cited by
46
References
28
Citations by year
2026: 2 · 2025: 3 · 2024: 2 · 2022: 1 · 2020: 2 · 2019: 1 · 2017: 2 · 2016: 1 · 2013: 1 · 2012: 1
FWCI
0.73
Type
journal article
Language
en
Open access
closed
Locations
Physical review. B, Condensed matter (publishedVersion)
Topics
  • Physical Sciences › Earth and Planetary Sciences › Geophysics › High-pressure geophysics and materials
  • Physical Sciences › Engineering › Mechanical Engineering › Thermodynamic and Structural Properties of Metals and Alloys
  • Physical Sciences › Materials Science › Materials Chemistry › Thermal Expansion and Ionic Conductivity
Keywords
lattice dynamics, germanium, silicon, Born-von Karman model, phonon dispersion, elastic constants, force constants, neighbor interaction, phonon density of states, Debye temperature, specific heat, diamond lattice

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