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Structure of vortex liquid phase in irradiated BSCCO(2212) crystals

N. Morozov, L. N. Bulaevskii, M. P. Maley, V. Thorsmolle, A. E. Koshelev, A. Petrean, W. K. Kwok

cond-mat.supr-conarXiv:cond-mat/9809165

Abstract

The c-axis resistivity in irradiated and in pristine BSCCO(2212) crystals is measured as a function of the in-plane magnetic field component at fixed out-of-plane component B in the vortex liquid phase at T=67 K. From this data we extract the dependence of the phase difference correlation length inside layers on B and estimate the average length of pieces of vortex lines confined inside columnar defects as a function of the filling factor f=B / Bϕ. The maximum length, about 15 interlayer distances, is reached near f=0.35.

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