Journal
PHYSICAL REVIEW B
Volume 76, Issue 22, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.76.220502
Keywords
-
Ask authors/readers for more resources
Tunneling in CaC6 crystals reproducibly reveals superconducting gaps Delta of 2.3 +/- 0.2 meV that are similar to 40% larger than reported earlier. In an isotropic s-wave scenario, that puts CaC6 into the class of very strongly coupled superconductors, since 2 Delta/kT(c)similar to 4.6, implying that soft Ca phonons are primarily involved in the superconductivity. This conclusion explains the relatively large Ca isotope effect found recently for CaC6, but it could also signal a strong anisotropy in the electron-phonon interaction.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available