Flux pinning and phase transitions in model high-temperature superconductors with columnar defects.

  title={Flux pinning and phase transitions in model high-temperature superconductors with columnar defects.},
  author={Lee and Stroud and Girvin},
  journal={Physical review. B, Condensed matter},
  volume={48 2},
  • Lee, Stroud, Girvin
  • Published 9 December 1992
  • Physics
  • Physical review. B, Condensed matter
We calculate the degree of flux pinning by defects in model high-temperature superconductors (HTSC's). The HTSC is modeled as a three-dimensional network of resistively shunted Josephson junctions in an external magnetic field, corresponding to a HTSC in the extreme type-II limit. Disorder is introduced either by randomizing the coupling between grains (model-[ital A] disorder) or by removing grains (model-[ital B] disorder). Three types of defects are considered: point disorder, random line… 
9 Citations
Unscreened universality class for superconductors with columnar disorder
The phase transition in a model for vortex lines in high temperature superconductors with columnar defects, i.e., linearly correlated quenched random disorder, is studied with finite size scaling and
Vortex lattice melting, pinning and kinetics
The phenomenology of the high Tc superconductors is discussed both at the level of the thermodynamics of melting of the Abrikosov flux lattice and in terms of the melting and kinetics of the flux
The influence of low doses of columnar defects on the dissipation in layered high-Tc superconductors
A number of workers have used columnar defects ton increase flux pinning in the high T matterials. However in single crystal whiskers of 2∶2∶1∶2 BSCCO we find that a low concentration of 1.6×109
Dynamical phase transition in two-dimensional fully frustrated Josephson junction arrays with resistively shunted junction dynamics
Abstract.The dynamical phase transitions in two-dimensional fully frustrated Josephson junction arrays at zero temperature are investigated numerically with the resistively shunted junction model
Pinning via intrinsic weak links: A possible scenario and applications
A possible scenario for critical current enhancement via intrinsic weak‐link‐assisted pinning in isotropic high‐Tc superconductors is proposed. By considering a subtle balance between different
Disorder-induced superconductor to insulator transition and finite phase stiffness in two-dimensional phase-glass models
We study numerically the superconductor to insulator transition in two-dimensional phase-glass (or chiral-glass) models with varying degree of disorder. These models describe the effects of gauge
Transformations of the Vortex Solid