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Effects of point defects on the phase diagram of vortex states in high-Tc superconductors in B//c axis

Yoshihiko Nonomura·Xiao Hu
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Abstract

The phase diagram for the vortex states of high-$T_{\rm c}$ superconductors with point defects in $\vec{B} \parallel c$ axis is drawn by large-scale Monte Carlo simulations. The vortex slush (VS) phase is found between the vortex glass (VG) and vortex liquid (VL) phases. The first-order transition between this novel normal phase and the VL phase is characterized by a sharp jump of the density of dislocations. The first-order transition between the Bragg glass (BG) and VG or VS phases is also clarified. These two transitions are compared with the melting transition between the BG and VL phases.

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Yoshihiko Nonomura, Xiao Hu. 2001-03-13. Effects of point defects on the phase diagram of vortex states in high-Tc superconductors in B//c axis. https://doi.org/10.1103/physrevlett.86.5140

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