Experimental evidence for the vortex glass phase in untwinned, proton irradiated YBa2Cu3O7-delta.
PHYSICAL REVIEW LETTERS 2000;
84:5852-5855. [PMID:
10991071 DOI:
10.1103/physrevlett.84.5852]
[Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/1998] [Indexed: 05/23/2023]
Abstract
We report on magnetoresistance measurements of the effects of 9 MeV proton irradiation on a clean, untwinned single crystal of YBa2Cu3O7-delta. For the first time, evidence for a vortex glass transition is detected in an untwinned single crystal of YBa2Cu3O7-delta with induced pointlike disorder, in which the first order vortex melting transition is completely suppressed after proton irradiation. Our results suggest that a sufficiently high pinning disorder is required in order for the vortex glass phase to be observed.
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