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Signature of the matching field in bose-glass melting of untwinned YBaCuO single crystals

Physical Review B - Condensed Matter and Materials Physics, ISSN: 1550-235X, Vol: 59, Issue: 18, Page: R11665-R11667
1999
  • 17
    Citations
  • 0
    Usage
  • 10
    Captures
  • 0
    Mentions
  • 0
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Metrics Details

  • Citations
    17
    • Citation Indexes
      17
  • Captures
    10

Article Description

We map out the phase boundary separating the Bose-glass and vortex-liquid phases in an irradiated twin-free YBaCuO single crystal. We take the phase boundary to be the temperature T and magnetic field H at which the crystal begins to screen a small ac magnetic field, h. There is a significant change in slope dT/dH of the phase boundary at the matching field B (≃ 0.5 T) indicating that interstitial vortices significantly weaken pinning in the Bose-glass state. There is also a pronounced peak in the slope dT/dH just below B at higher h. Both features disappear when the field is tilted away from the columns. © 1999 The American Physical Society.

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