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arXiv · 0803.1079

Order-disorder transition induced by deformation of vortex lines at the twin boundaries in YBa$_2$Cu$_3$O$_{7-δ}$-crystals: test of the Lindemann criteria

Yu. T. Petrusenko·A. V. Bondarenko·A. A. Zavgorodniy·M. A. Obolenskii·V. I. Beletskii
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Abstract

We show that rotation of the magnetic field off the plane of twin boundaries (TB's) induces transition of an ordered vortex solid phase to a disordered one. This transition arises due to appearance of transverse deformations of vortex lines near the TB's, $u_{t,TB}$, the amplitude of which satisfies the Lindemann criteria, $u_{t,rp}=c_La_0$. This order-disorder transition is accompanied by an increase in the depinning current, by crossover from an elastic creep to plastic one, and by appearance of the $S$-shaped voltage-current characteristics.

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Yu. T. Petrusenko, A. V. Bondarenko, A. A. Zavgorodniy, M. A. Obolenskii, V. I. Beletskii. 2008-03-07. Order-disorder transition induced by deformation of vortex lines at the twin boundaries in YBa$_2$Cu$_3$O$_{7-δ}$-crystals: test of the Lindemann criteria. https://arxiv.org/abs/0803.1079

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