Physics – Condensed Matter – Superconductivity
Scientific paper
2006-03-02
Physics
Condensed Matter
Superconductivity
5 pages, 4 figures, accepted for publication in Phys. Rev. Lett
Scientific paper
10.1103/PhysRevLett.96.247004
To elucidate the nature of the superconducting ground state of the geometrically frustrated pyrochlore KOs2O6 (Tc=9.6K), the thermal conductivity was measured down to low temperatures (~Tc/100). We found that the quasiparticle mean free path is strikingly enhanced below a transition at Tp=7.5K, indicating enormous electron inelastic scattering in the normal state. In a magnetic field the conduction at T ->0K is nearly constant up to ~0.4Hc2, in contrast with the rapid growth expected for superconductors with an anisotropic gap. This unambiguously indicates a fully gapped superconductivity, in contrast to the previous studies. These results highlight that KOs2O6 is unique among superconductors with strong electron correlations.
Hiroi Zenji
Kasahara Yasushi
Matsuda Yuichi
Muraoka Yuji
Shibauchi Takasada
No associations
LandOfFree
Thermal Conductivity of the Pyrochlore Superconductor KOs2O6: Strong Electron Correlations and Fully Gapped Superconductivity 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 Thermal Conductivity of the Pyrochlore Superconductor KOs2O6: Strong Electron Correlations and Fully Gapped Superconductivity, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Thermal Conductivity of the Pyrochlore Superconductor KOs2O6: Strong Electron Correlations and Fully Gapped Superconductivity will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-368925