This article has an erratum: [erratum]
Volume 84, Number 6, December 2008
|Number of page(s)||5|
|Section||Condensed Matter: Structural, Mechanical and Thermal Properties|
|Published online||03 December 2008|
Interacting dipoles in type-I clathrates: Why glass-like though crystalline?
Materials Science Division, Argonne National Laboratory - 9700 South Cass Avenue, Argonne, IL 60439, USA
2 Advanced Photon Source, Argonne National laboratory - 9700 South Cass Avenue, Argonne, IL 60439, USA
Accepted: 19 November 2008
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.
PACS: 66.35.+a – Quantum tunneling of defects / 61.72.Bb – Theories and models of crystal defects / 61.43.-j – Disordered solids
© EPLA, 2008
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.