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The Thermal Conductivity Plateau in Disordered Systems

  • B. Golding
  • J. E. Graebner
  • L. C. Allen
Conference paper
Part of the Springer Series in Solid-State Sciences book series (SSSOL, volume 68)

Abstract

The thermal conductivity of disordered substances exhibits a region of weak temperature dependence known as the “plateau” [1]. It occurs in glasses in a temperature range typically between 1 and 20 K. At much lower temperatures, the thermal conductivity is governed by the resonant scattering of thermal phonons from tunneling systems and follows a T2 power law. Above the plateau the temperature dependence is roughly linear in T. Explanations offered for the occurrence of a plateau include: phonon scattering by enhanced densities of tunneling systems [2], elastic scattering by density fluctuations [3], dimensional crossover of the vibrational density of states [4], and weak localization of phonons [5]. As yet there has been no convincing description of this phenomenon.

Keywords

Density Fluctuation Weak Localization Resonant Scattering Tunneling System Weak Temperature Dependence 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

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Copyright information

© Springer-Verlag Berlin Heidelberg 1986

Authors and Affiliations

  • B. Golding
    • 1
  • J. E. Graebner
    • 1
  • L. C. Allen
    • 1
  1. 1.AT & T Bell LaboratoriesMurray HillUSA

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