Disorder-induced vortex phase transition in untwinned YBa2Cu3O7-δ crystal
SourcePhysica B: Condensed Matter
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Local magnetic measurements in an untwinned YBa2Cu3O7-δ crystal as a function of temperature, field and time reveal anomalies occurring along the same line BSS(T) in the field-temperature plane. We identify BSS(T) as a boundary line between two distinct solid phases of the vortex system. © 2000 Elsevier Science B.V. All rights reserved.