Low-temperature vortex dynamics in twinned superconductors

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 [ital one[minus]dimensional] disordered semiconductors. As in flux arrays with columnar pins, there is a regime where the dynamics is dominated by sup...

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Bibliographic Details
Published in:Physical review letters 1994-05, Vol.72 (21), p.3409-3412
Main Authors: Marchetti, MC, Vinokur, VM
Format: Article
Language:English
Subjects:
665411 - Basic Superconductivity Studies- (1992-)
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
DIAGRAMS
DYNAMICS
MAGNETIC FLUX
MECHANICS
PHASE DIAGRAMS
SUPERCONDUCTORS
TWINNING
TYPE-II SUPERCONDUCTORS
VORTICES
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Summary: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 [ital one[minus]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.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.72.3409