4D-XY quantum criticality in a doped Mott insulator

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dc.creatorFranz, M.
dc.creatorIyengar, A. P.
dc.date2005-04-27
dc.date2006-02-10
dc.date.accessioned2026-07-07T06:37:43Z
dc.date.available2026-07-07T06:37:43Z
dc.descriptionA new phenomenology is proposed for the superfluid density of strongly underdoped cuprate superconductors based on recent data for ultra-clean single crystals of YBCO. The data feature a puzzling departure from Uemura scaling and a decline of the slope as the T_c = 0 quantum critical point is approached. We show that this behavior can be understood in terms of the renormalization of quasiparticle effective charge by quantum fluctuations of the superconducting phase as described by a (3+1)-dimensional XY model. We calculate the renormalization of the superfluid density and its slope, explain the new phenomenology, and predict its eventual demise close to the QCP.
dc.descriptionVersion published in PRL. For additional info and related work visit http://www.physics.ubc.ca/~franz
dc.identifierhttps://arxiv.org/abs/cond-mat/0504735
dc.identifierhttp://arxiv.org/abs/cond-mat/0504735
dc.identifierPRL 96, 047007 (2006)
dc.identifierdoi:10.1103/PhysRevLett.96.047007
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/100492
dc.subjectSuperconductivity
dc.subjectStrongly Correlated Electrons
dc.title4D-XY quantum criticality in a doped Mott insulator
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