Electron structure and temperature-dependent shifts in 133Cs NMR spectra of the Cs 8Ge 136 clathrate

J. Gryko, R. F. Marzke, G. A. Lamberton, T. M. Tritt, M. Beekman, G. S. Nolas

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

We have synthesized and characterized the type-II germanium clathrate Cs 8Ge 136. The cesium atoms are ordered in structure, occupying the larger hexakaidecahedra while the smaller dodecahedra are basically empty. Band structure and electrical resistivity data indicate that Cs 8Ge 136 is metallic. Temperature-dependent Cs-133 nuclear magnetic resonance measurements show a sharp, single peak at temperatures below 343 K and above 383 K. Between these two temperature limits, a broad second peak is also observed. The transition from one peak to two peaks is reversible upon a heating-cooling cycle and may be a result of a Cs-Cs dimer between two Cs atoms in adjacent germanium cages.

Original languageEnglish (US)
Article number115208
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume71
Issue number11
DOIs
StatePublished - Mar 15 2005

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clathrates
Germanium
Nuclear magnetic resonance
nuclear magnetic resonance
Electrons
shift
Magnetic resonance measurement
germanium
Atoms
Cesium
electrons
Dimers
Band structure
Temperature
electrical resistivity
temperature
cesium
Cooling
atoms
Heating

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Electron structure and temperature-dependent shifts in 133Cs NMR spectra of the Cs 8Ge 136 clathrate. / Gryko, J.; Marzke, R. F.; Lamberton, G. A.; Tritt, T. M.; Beekman, M.; Nolas, G. S.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 71, No. 11, 115208, 15.03.2005.

Research output: Contribution to journalArticle

Gryko, J. ; Marzke, R. F. ; Lamberton, G. A. ; Tritt, T. M. ; Beekman, M. ; Nolas, G. S. / Electron structure and temperature-dependent shifts in 133Cs NMR spectra of the Cs 8Ge 136 clathrate. In: Physical Review B - Condensed Matter and Materials Physics. 2005 ; Vol. 71, No. 11.
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