期刊
EPL
卷 86, 期 5, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1209/0295-5075/86/56004
关键词
-
资金
- US DOE, Office of Science, Office of Basic Energy Sciences [DE-FG02-05ER46241, DE-AC02-06CH11357]
We present the quantitative interpretation for the glass-like behavior of thermal conductivities k(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.(T) between the p-type and the n-type beta-BGS found recently by K. Suekuni et al. (Phys. Rev. B, 77 (2008) 235119.) Copyright (C) EPLA, 2009
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