Glass-like thermal transport in symmetry-broken clathrates.
We present the quantitative interpretation for the glass-like behavior of thermal conductivities {kappa}(T) for type-I clathrate compounds involving off-centered guest ions. It is shown that the dipole-dipole interaction generated in cage/guest-ion systems is crucial to reproduce the characteristics of thermal conductivities for these symmetry-broken clathrates. The above scenario also explains well the difference of {kappa}(T) between the p-type and the n-type {beta}-BGS found recently by K. Suekuni et al.
- Research Organization:
- Argonne National Laboratory (ANL)
- Sponsoring Organization:
- SC
- DOE Contract Number:
- AC02-06CH11357
- OSTI ID:
- 965249
- Report Number(s):
- ANL/MSD/JA-64565
- Journal Information:
- Europhys. Lett., Journal Name: Europhys. Lett. Journal Issue: 2009 Vol. 86; ISSN 0295-5075; ISSN EULEEJ
- Country of Publication:
- United States
- Language:
- ENGLISH
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