DOI | Trouver le DOI : https://doi.org/10.1103/PhysRevB.69.132101 |
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Auteur | Rechercher : Tse, John S.1; Rechercher : Li, Zhiqiang1; Rechercher : Uehara, Kentaro1; Rechercher : Ma, Yanming1; Rechercher : Ahuja, Rajeev |
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Affiliation | - Conseil national de recherches du Canada. Institut Steacie des sciences moléculaires du CNRC
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Format | Texte, Article |
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Résumé | The Fermi surface, phonon spectrum, and electron-phonon coupling parameter for metallic Nb under high pressure have been investigated with a full potential linearized augmented plane wave, linear muffin-tin orbital, and pseudopotential plane-wave methods. The results support the experimental observation of electronic topological transitions at 5 and 60 GPa. The lower pressure transition is related to a very subtle change in the topology of the Fermi surface as revealed in accurate calculations of the Hall coefficient. The transition at 60 GPa is identified with a change in the Fermi-surface topology due to the crossing of the electronic band along the Γ→N (Σ) direction in the cubic Brillouin zone. The calculated electron-phonon coupling parameters are in qualitative agreement with those derived from high-pressure experiment. |
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Date de publication | 2004-04-21 |
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Dans | |
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Langue | anglais |
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Numéro NPARC | 12329130 |
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Exporter la notice | Exporter en format RIS |
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Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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Identificateur de l’enregistrement | 7f7a57c3-7dd4-49f9-b974-174388486a49 |
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Enregistrement créé | 2009-09-10 |
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Enregistrement modifié | 2020-04-17 |
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