Single-gap s-wave superconductivity in Cu$_x$TiSe$_2$
| dc.creator | Li, S. Y. | |
| dc.creator | Taillefer, Louis | |
| dc.creator | Wu, G. | |
| dc.creator | Chen, X. H. | |
| dc.date | 2007-01-26 | |
| dc.date.accessioned | 2026-07-07T08:28:16Z | |
| dc.date.available | 2026-07-07T08:28:16Z | |
| dc.description | The in-plane thermal conductivity $κ$ of the layered superconductor Cu$_x$TiSe$_2$ was measured down to temperatures as low as $T_c$/40, at $x$ = 0.06 near where the CDW order vanishes. The absence of a residual linear term at $ T \to 0$ is strong evidence for conventional s-wave superconductivity in this system. This is further supported by the slow magnetic field dependence, also consistent with a single gap, of uniform magnitude across the Fermi surface. Comparison with the closely related material NbSe$_2$, where the superconducting gap is three times larger on the Nb 4$d$ band than on the Se 4$p$ band, suggests that in Cu$_{0.06}$TiSe$_2$ the Se 4$p$ band is below the Fermi level and the Ti 3$d$ band is alone responsible for the superconductivity. | |
| dc.description | 4 pages, 4 figures | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0701669 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0701669 | |
| dc.identifier | Phys. Rev. Lett. 99, 107001 (2007) | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/137554 | |
| dc.subject | Superconductivity | |
| dc.subject | Strongly Correlated Electrons | |
| dc.title | Single-gap s-wave superconductivity in Cu$_x$TiSe$_2$ | |
| dc.type | text |