Evidence for Charged Critical Behavior in the Pyrochlore SuperconductorRbOs2O6

2004/09/15 by T. Schneider, R. Khasanov, H. Keller · 12 citations
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Condensed matter physics #Criticality #Cuprate #Lambda #London penetration depth #Nuclear materials and radiation effects #Nuclear physics #Penetration depth #Physics #Physics of Superconductivity and Magnetism #Pyrochlore #Quantum mechanics #Superconductivity #cond-mat.supr-con

paper · pdf · doi:10.1103/physrevlett.94.077002

published in Physical Review Letters 94(7), 077002 (American Physical Society) · 5 pages, 4 figures

arxiv created 2004/09/15 · openalex publication_date 2005/02/22 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We analyze magnetic penetration depth (\ensuremathλ) data of the recently discovered superconducting pyrochlore oxide RbOs₂O₆. Our results strongly suggest that in RbOs₂O₆ charged critical fluctuations dominate the temperature dependence of \ensuremathλ near T_c. This is in contrast with 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 YBa₂Cu₃O_6.59.

Citations

• Probing Inhomogeneities in Type II Superconductors by Means of Thermal Fluctuations, Magnetic Fields, and Isotope Effects
• Pressure Effects on the Transition Temperature and the Magnetic Field Penetration Depth in the Pyrochlore SuperconductorRbOs2O6
• Superconducting properties of the pyrochlore oxide Cd2Re2O7
• Critical Fluctuations in Superconductors and the Magnetic Field Penetration Depth

Cited by

• Magnetic and charge transport properties of the Na-based Os oxide pyrochlore