Vibrational modes in silicon clathrate compounds : a key to understanding superconductivity
hal.structure.identifier | Department of Applied Chemistry [Faculty of Engineering, Hiroshima University] | |
dc.contributor.author | RENY, Edouard | |
hal.structure.identifier | Laboratoire de Physique de la Matière Condensée et Nanostructures [LPMCN] | |
dc.contributor.author | SAN MIGUEL, Alfonso | |
hal.structure.identifier | Laboratoire de Physico-Chimie des Matériaux Luminescents [LPCML] | |
dc.contributor.author | GUYOT, Yannick | |
hal.structure.identifier | Laboratoire de Physique de la Matière Condensée et Nanostructures [LPMCN] | |
dc.contributor.author | MASENELLI, Bruno | |
hal.structure.identifier | Laboratoire de Physique de la Matière Condensée et Nanostructures [LPMCN] | |
dc.contributor.author | MÉLINON, Patrice | |
hal.structure.identifier | Laboratoire de Physico-Chimie des Matériaux Luminescents [LPCML] | |
dc.contributor.author | SAVIOT, L. | |
hal.structure.identifier | Department of Applied Chemistry [Faculty of Engineering, Hiroshima University] | |
dc.contributor.author | YAMANAKA, S. | |
hal.structure.identifier | Laboratoire de Physico-Chimie des Matériaux Luminescents [LPCML] | |
dc.contributor.author | CHAMPAGNON, Bernard | |
hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
dc.contributor.author | CROS, Christian | |
hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
dc.contributor.author | POUCHARD, Michel | |
hal.structure.identifier | Institut Laue-Langevin [ILL] | |
dc.contributor.author | BOROWSKI, M. | |
hal.structure.identifier | European Synchrotron Radiation Facility [ESRF] | |
dc.contributor.author | DIANOUX, A. J. | |
dc.date.issued | 2002 | |
dc.identifier.issn | 1098-0121 | |
dc.description.abstractEn | Several doped type-I silicon clathrates (Na8@Si46, K8@Si46, Ba8@Si46 and I8@Si46) have been investigated both experimentally by inelastic neutron scattering and x-ray-absorption spectroscopy and theoretically by ab initio calculations. We find that Ba atoms have a stronger coupling with the host lattice than Na or K ones. We show that in the superconductor Ba8@Si46 the coupling is effectively done by host acoustic phonons exciting guest acoustic modes. These features suggest that the host-guest vibrational coupling is a crucial parameter to explain the appearance of superconductivity in addition to the density of states near the Fermi level. | |
dc.language.iso | en | |
dc.publisher | American Physical Society | |
dc.subject.en | Silicon | |
dc.subject.en | Clathrate | |
dc.subject.en | Superconductivity | |
dc.title.en | Vibrational modes in silicon clathrate compounds : a key to understanding superconductivity | |
dc.type | Article de revue | |
dc.identifier.doi | 10.1103/PhysRevB.66.014532 | |
dc.subject.hal | Chimie/Matériaux | |
bordeaux.journal | Physical Review B: Condensed Matter and Materials Physics (1998-2015) | |
bordeaux.page | 014532 (7 p.) | |
bordeaux.volume | 66 | |
bordeaux.issue | 1 | |
bordeaux.peerReviewed | oui | |
hal.identifier | hal-00717021 | |
hal.version | 1 | |
hal.popular | non | |
hal.audience | Internationale | |
hal.origin.link | https://hal.archives-ouvertes.fr//hal-00717021v1 | |
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