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Titolo: Competing orders suppressed by disorder around a hidden quantum critical point in high-T c cuprate superconductors
Autori: 
Data di pubblicazione: 2010
Rivista: 
PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS  
Abstract: We report extensive muon-spin-rotation measurements on the lightly doped Y1-xCaxBa2Cu3O6+y compound, which allows us to disentangle the effect of disorder, controlled by random Ca2+ substitution, from that of mere doping. A three-dimensional phase diagram of lightly doped cuprates is accurately drawn. It shows a quantum critical point around which a thermally activated antiferromagnetic phase competes with superconductivity. Disorder suppresses both the competing order parameters and the quantum critical point, unveiling an underlying frozen state.
Handle: http://hdl.handle.net/11584/107013
Tipologia:1.1 Articolo in rivista

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