Evidence for charged critical behavior in the pyrochlore superconductor RbOs2O6

Details Evidence for charged critical behavior in the pyrochlore superconductor RbOs2O6 Evidence for charged critical behavior in the pyrochlore superconductor RbOs2O6

2004-09-15

arxiv.org/abs/cond-mat/0409398v1

Physics

Condensed Matter

Superconductivity

5 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.94.077002

We analyze magnetic penetration depth data of the recently discovered superconducting pyrochlore oxide RbOs2O6. Our results strongly suggest that in RbOs2O6 charged critical fuctuations dominate the temperature dependence of the magnetic penetration depth near Tc. This is in contrast to the mean-field behavior observed in conventional superconductors and the uncharged critical behavior found in nearly optimally doped cuprate superconductors. However, this finding agrees with the theoretical predictions for charged criticality and the charged criticality observed in underdoped YBa2Cu3O6.59.

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