| DOI | Trouver le DOI : https://doi.org/10.1103/PhysRevB.69.132101 |
|---|
| Auteur | Rechercher : Tse, John S.1; Rechercher : Li, Zhiqiang1; Rechercher : Uehara, Kentaro1; Rechercher : Ma, Yanming1; Rechercher : Ahuja, Rajeev |
|---|
| Affiliation | - Conseil national de recherches Canada. Institut Steacie des sciences moléculaires du CNRC
|
|---|
| Format | Texte, Article |
|---|
| 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. |
|---|
| Date de publication | 2004-04-21 |
|---|
| Dans | |
|---|
| Langue | anglais |
|---|
| Numéro NPARC | 12329130 |
|---|
| Exporter la notice | Exporter en format RIS |
|---|
| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
|---|
| Identificateur de l’enregistrement | 7f7a57c3-7dd4-49f9-b974-174388486a49 |
|---|
| Enregistrement créé | 2009-09-10 |
|---|
| Enregistrement modifié | 2020-04-17 |
|---|
