Interacting dipoles in type-I clathrates : why glass-like though crystalline?
Almost identical thermal properties of type-I clathrate compounds to those of glasses follow naturally from the consideration that off-centered guest ions possess electric dipole moments. Local fields from neighbor dipoles create many potential minima in the configuration space. A theoretical analysis based on two-level tunneling states demonstrates that interacting dipoles are a key to quantitatively explain the glass-like behaviors of low-temperature thermal properties of type-I clathrate compounds with off-centered guest ions.
- Research Organization:
- Argonne National Laboratory (ANL)
- Sponsoring Organization:
- SC
- DOE Contract Number:
- AC02-06CH11357
- OSTI ID:
- 944807
- Report Number(s):
- ANL/XSD/JA-62407
- Journal Information:
- Europhy. Lett., Journal Name: Europhy. Lett. Journal Issue: 2008 Vol. 84; ISSN 0295-5075; ISSN EULEEJ
- Country of Publication:
- United States
- Language:
- ENGLISH
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