Suppression of the first order vortex melting transition by intrinsic pinning in YBa2Cu3O7- delta.
作者： W. K. Kwok , J. Fendrich , U. Welp , S. Fleshler , J. Downey
DOI: 10.1103/PHYSREVLETT.72.1088
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摘要: The first order vortex melting transition in single crystal YBa[sub 2]Cu[sub 3]O[sub 7[minus][delta]] is investigated for magnetic field direction close to [bold H][parallel][ital a][bold b]. For exact alignment b], the kink'' [rho]([ital T]) associated with replaced a continuous resistive presence of intrinsic pinning, indicative second dynamic scaling exponent [ital s]=1.4. In addition, we demonstrate abatement temperature dependence magnetoresistivity, H][parallel][bold c] only six twin boundaries.
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