Low-temperature vortex dynamics in twinned superconductors

M. Cristina Marchetti; Valerii M. Vinokur

doi:10.1103/PhysRevLett.72.3409

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Low-temperature vortex dynamics in twinned superconductors

M. Cristina Marchetti, Valerii M. Vinokur

DOI 10.1103/PhysRevLett.72.3409 · Physical Review Letters

T1

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Abstract

The low-temperature dynamics of magnetic flux lines driven to move transverse to family of parallel twin planes maps onto the dynamics of carriers in one-dimensional disordered semiconductors. As in flux arrays with columnar pins, there is a regime where the dynamics is dominated by superkink excitations that correspond to Mott variable-range hopping (VRH) of carriers. In one dimension, however, rare events, such as large regions void of twin planes, can impede VRH and dominate transport in samples that are sufficiently long in the direction of flux motion. In short samples rare regions can be responsible for mesoscopic effects.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
YBa2Cu3O7-x Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
La2CuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown