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

Yu. T. Petrusenko, A. V. Bondarenko, A. A. Zavgorodniy +2

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…