Anomalous weak magnetism in superconducting YBa2Cu3O6+x

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DOIResolve DOI: http://doi.org/10.1126/science.1060844
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TypeArticle
Journal titleScience
ISSN0036-8075
Volume292
Issue5522
Pages16921695; # of pages: 4
AbstractFor some time now, there has been considerable experimental and theoretical effort to understand the role of the normal-state "pseudogap" phase in underdoped high-temperature cuprate superconductors. Recent debate has centered on the question of whether the pseudogap is independent of superconductivity. We provide evidence from zero-field muon spin relaxation measurements in YBa2Cu3O6+x for the presence of small spontaneous static magnetic fields of electronic origin intimately related to the pseudogap transition. Our most significant finding is that, for optimal doping, these weak static magnetic fields appear well below the superconducting transition temperature. The two compositions measured suggest the existence of a quantum critical point somewhat above optimal doping.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada; NRC Steacie Institute for Molecular Sciences
Peer reviewedNo
Identifier10079956
NPARC number12338094
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Record identifier2f13625f-c8bf-468f-8389-7469168a9701
Record created2009-09-10
Record modified2016-05-09
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