J. Phys. Soc. Jpn. 85, 034712 (2016) [6 Pages]

Dynamic Melting of Driven Abrikosov Lattices in an Amorphous MoxGe1−x Film in Tilted Field

+ Affiliations
1Department of Physics, Tokyo Institute of Technology, Meguro, Tokyo 152-8551, Japan2Department of Engineering Science, The University of Electro-Communications, Chofu, Tokyo 182-8585, Japan

We report a comparative study of the dynamic melting of driven vortex lattices in magnetic field tilted (by θ = 36°) from the normal to the film surface and that of a driven Abrikosov lattice in untilted field (θ = 0). From the mode-locking (ML) resonance, we confirm that vortex lattices in tilted field are stretched in the tilt direction and that, with increasing dc velocity at ML, the shape and orientation of the driven lattice change. Associated with this structural change, the dynamic melting field at which the driven lattice melts also changes. Our results show that, regardless of the lattice shape and orientation, dynamic melting occurs as the shorter side of the distorted lattices reaches close to the side at which the isotropic lattice melts dynamically.

©2016 The Physical Society of Japan


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