Origins of low- and high-pressure discontinuities of $T_{c}$ in niobium
| dc.creator | Wierzbowska, Malgorzata | |
| dc.creator | de Gironcoli, Stefano | |
| dc.creator | Giannozzi, Paolo | |
| dc.date | 2005-04-04 | |
| dc.date | 2006-02-07 | |
| dc.date.accessioned | 2026-07-07T06:37:38Z | |
| dc.date.available | 2026-07-07T06:37:38Z | |
| dc.description | The discontinuities of $T_{c}$ in Niobium under pressure are examined by means of the pseudopotential plane-wave implementation of the electron-phonon coupling calculated from density-functional perturbation theory. Both low- and high-pressure discontinuities of $T_{c}$ have their origin in the Kohn anomalies and are caused by the low-frequency phonons, but the mechanism leading to the discontinuities is different in the two cases. The low-pressure anomaly is associated with a global decrease of the nesting factor in the whole Brillouin Zone and not to a visible change in the band structure. The high-pressure anomaly is instead connected with a well-pronounced change in the band structure. | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0504077 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0504077 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/100463 | |
| dc.subject | Superconductivity | |
| dc.subject | Materials Science | |
| dc.title | Origins of low- and high-pressure discontinuities of $T_{c}$ in niobium | |
| dc.type | text |