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Internal magnetic fields in the high-temperature superconductor YBa2Cu3O7−δ from muon spin rotation experiments

Pümpin, B. ; Keller, H.-J. ; Kündig, W. ; Odermatt, W. ; Patterson, B. D. ; Schneider, J. W. ; Simmler, H. ; Conell, S. ; Müller, K. A. ; Bednorz, J. G. ; Morgenstern, Ingo
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Date of publication of this fulltext: 09 Aug 2010 12:14


Abstract

Muon spin rotation (mgrSR) measurements of the internal magnetic fields in sintered YBa2Cu3O7–delta samples are reported. Pronounced differences between field-cooled (FC) and zero-field-cooled (ZFC) mgrSR signals, hysteresis effects and flux trapping are observed. The mgrSR results are compared with the results of macroscopic experiments (susceptibility, magnetization, resistivity) and with predictions obtained from models of weakly-coupled superconducting regions.


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