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Journal articles
Lattice dynamics of the cluster chain compounds M2Mo6Se6 (M = K, Rb, Cs, In, and Tl)
Liam Gannon
1
Lilia Boeri
2, 3
Christopher A. Howard
4
Patrick Gougeon
5
Philippe Gall
5
Michel Potel
5
Diala Salloum
5, 6
Alexander P. Petrovic
7, 8
Moritz Hoesch
9
Liam Gannon 1
Author
Lilia Boeri 2, 3
Author
Christopher A. Howard 4
Author
Patrick Gougeon 5
Author IdHAL : patrick-gougeon ORCID : https://orcid.org/0000-0003-4778-5581
Philippe Gall 5
Author
Michel Potel 5
Author
Diala Salloum 5, 6
Author
Alexander P. Petrovic 7, 8
Author
Moritz Hoesch 9
Author
1
University of Oxford [Oxford] (Wellington Square, Oxford OX1 2JD - United Kingdom)
2
Università degli Studi di Roma "La Sapienza" [Rome] (Piazzale Aldo Moro 5, 00185 Roma - Italy)
3
CNR - Consiglio Nazionale delle Ricerche [Roma] (Piazzale Aldo Moro,7 - 00185, Roma - Italy)
4
UCL - University College of London [London] (Gower Street, London WC1E 6BT - United Kingdom)
5
ISCR - Institut des Sciences Chimiques de Rennes (Campus de Beaulieu - Bât. 10 Avenue du Général Leclerc 35042 Rennes Cedex - France)
- UR1 - Université de Rennes 1 (2 rue du Thabor - CS 46510 - 35065 Rennes cedex - France)
- UNIV-RENNES - Université de Rennes (France)
- INSA Rennes - Institut National des Sciences Appliquées - Rennes (20, avenue des Buttes de Coësmes - CS 70839 - 35708 Rennes cedex 7 - France)
- Ecole Nationale Supérieure de Chimie de Rennes (France)
- CNRS - Centre National de la Recherche Scientifique : UMR6226 (France)
6
LU - Lebanese University [Beirut] ( P.O. Box 6573/14 Badaro, Museum, Beirut - Lebanon)
7
University of Geneva [Switzerland] (Bd du Pont-d'Arve 40, CH-1211 Geneva 4 - Switzerland)
8
NTU - Nanyang Technological University (Singapore)
9
DESY - Deutsches Elektronen-Synchrotron [Hamburg] (Notkestraße 85 D-22607 Hamburg - Germany)
Abstract : The lattice dynamics of members of the M2Mo6Se6 family of materials with guest ions M = K, Rb, Cs, In, and Tl has been studied using inelastic x-ray scattering and Raman spectroscopy at room temperature, as well as by ab initio calculations. We find a good match between calculations and experiment, both for structure factors (eigenvectors) and for the calculated phonon frequencies. The observed lattice dynamics for Tl2Mo6Se6 show no signs of anharmonicity or absence of avoided dispersion crossings, thus ruling out previously hypothesized rattling phonon modes. The reduced mode energies for In2Mo6Se6 are identified as only partially responsible for the lower superconducting transition temperature T-c in this material when compared to Tl2Mo6Se6.
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Journal articles
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https://hal-univ-rennes1.archives-ouvertes.fr/hal-01861414
Contributor : Laurent Jonchère <>
Submitted on : Friday, August 24, 2018 - 2:29:54 PM
Last modification on : Monday, January 18, 2021 - 12:20:06 PM
Contributor : Laurent Jonchère <>
Submitted on : Friday, August 24, 2018 - 2:29:54 PM
Last modification on : Monday, January 18, 2021 - 12:20:06 PM
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- HAL Id : hal-01861414, version 1
- DOI : 10.1103/PhysRevB.98.014104
Collections
UNIV-RENNES1 | ISCR | CNRS | UR1-UFR-SPM | ISCR-CSM | INC-CNRS | UNIV-RENNES | INSA-RENNES | INSA-GROUPE
Citation
Liam Gannon, Lilia Boeri, Christopher A. Howard, Patrick Gougeon, Philippe Gall, et al.. Lattice dynamics of the cluster chain compounds M2Mo6Se6 (M = K, Rb, Cs, In, and Tl). Physical Review B: Condensed Matter and Materials Physics, American Physical Society, 2018, 98 (1), ⟨10.1103/PhysRevB.98.014104⟩. ⟨hal-01861414⟩
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