Evidence for charged critical fluctuations in underdoped Y-123

2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/24295We report and analyze in-plane penetration depth measurements in YBa2Cu3O7-x taken close to the critical temperature Tc. In underdoped YBa2Cu3O6:59 we find consistent evidence for charged critical behavior. Noting that the effective dimensionless charge scales as 1/sqrt(Tc), this new critical behavior should be generically observable in suitably underdoped cuprates.5 pages, 4 figuresSuperconductivityEvidence for charged critical fluctuations in underdoped Y-123text