Superconductivity on the density wave background with soliton-wall structure
| dc.creator | Grigoriev, P. D. | |
| dc.date | 2008-11-26 | |
| dc.date.accessioned | 2026-07-07T12:04:48Z | |
| dc.date.available | 2026-07-07T12:04:48Z | |
| dc.description | Superconductivity (SC) may microscopically coexist with density wave (DW) when the nesting of the Fermi surface (FS) is not perfect. There are, at least, two possible microscopic structures of a DW state with quasi-particle states remaining on the Fermi level and leading to the Cooper instability: (i) the soliton-wall phase and (ii) the small ungapped Fermi-surface pockets. The dispersion of such quasi-particle states strongly differs from that without DW, and so do the properties of SC on the DW background. The upper critical field $H_{c2}$ in such a SC state strongly increases as the system approaches the critical pressure, where superconductivity first appears. $H_{c2}$ may considerably exceed its typical value without DW and has unusual upward curvature as function of temperature. The results obtained explain the experimental observations in layered organic superconductors (TMTSF)$_{2}$PF$_{6}$ and $α$-(BEDT TTF)$_{2}$KHg(SCN)$_{4}$. | |
| dc.description | 7 pages | |
| dc.identifier | https://arxiv.org/abs/0811.4335 | |
| dc.identifier | http://arxiv.org/abs/0811.4335 | |
| dc.identifier | doi:10.1016/j.physb.2008.11.056 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/208207 | |
| dc.subject | Superconductivity | |
| dc.subject | Strongly Correlated Electrons | |
| dc.title | Superconductivity on the density wave background with soliton-wall structure | |
| dc.type | text |