Single-gap s-wave superconductivity in Cu$_x$TiSe$_2$

Details Single-gap s-wave superconductivity in Cu$_x$TiSe$_2$ Single-gap s-wave superconductivity in Cu$_x$TiSe$_2$

2007-01-26

arxiv.org/abs/cond-mat/0701669v1

Phys. Rev. Lett. 99, 107001 (2007)

Physics

Condensed Matter

Superconductivity

4 pages, 4 figures

Scientific paper

The in-plane thermal conductivity $\kappa$ 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.

Affiliated with

Also associated with

No associations

Rating

Single-gap s-wave superconductivity in Cu$_x$TiSe$_2$ does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Single-gap s-wave superconductivity in Cu$_x$TiSe$_2$, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Single-gap s-wave superconductivity in Cu$_x$TiSe$_2$ will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-493349