Longitudinal Current Dissipation in Bose-glass Superconductors

Abstract

A scaling theory of vortex motion in Bose glass superconductors with currents parallel to the common direction of the magnetic field and columnar defects is presented. Above the Bose-glass transition the longitudinal DC resistivity ${\rho }_{||}(T)\sim (T-T_{BG}{)}^{{\nu }^{\prime }{z}^{\prime }}$ vanishes much faster than the corresponding transverse resistivity ${\rho }_{\perp }(T)\sim (T-T_{BG}{)}^{{\nu }^{\prime }(z^{\prime }-2)}$, thus {\it reversing} the usual anisotropy of electrical transport in the normal state of layered superconductors. In the presence of a current $\mathbf{J}$ at an angle ${\theta }_J$ with the common field and columnar defect axis, the electric field angle ${\theta }_E$ approaches $\pi /2$ as $T\to T_{BG}^{+}$. Scaling also predicts the behavior of penetration depths for the AC currents as $T\to T_{BG}^{-}$, and implies a {\it jump discontinuity} at $T_{BG}$ in the superfluid density describing transport parallel to the columns.

5 pages, revtex

References in corpus (2)

• Elastic theory of flux lattices in presence of weak disorder
• I-V Characteristics of High Temperature Superconductors with Columnar Defects

Cited by in corpus (11)

• Vortex Pinning and Non-Hermitian Quantum Mechanics
• Critical properties of Bose-glass superconductors
• Dynamical universality classes of the superconducting phase transition
• Vortex Flow and Transverse Flux Screening at the Bose Glass Transition
• Vortex Physics in Confined Geometries
• Patterned Geometries and Hydrodynamics at the Vortex Bose Glass Transition
• Thermal depinning and transverse-field tilting transitions in a planar vortex array pinned by a columnar defect
• A study of nonlocal conductivity in high-temperature superconductors
• Melting of Flux Lines in an Alternating Parallel Current
• Smectic vortex glass
• Sliding Blocks Revisited: A simulational Study