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

Autor:	Petrusenko, Yu. T., Bondarenko, A. V., Zavgorodniy, A. A., Obolenskii, M. A., Beletskii, V. I.
Rok vydání:	2008
Předmět:	Condensed Matter - Superconductivity
Druh dokumentu:	Working Paper
Popis:	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. Comment: 4 pages, 4 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/0803.1079 Zobrazit plný text záznamu View this record from Arxiv