Superconducting vortices in two dimensions

Ideal superconductors carry current without resistance and perfectly expel externally applied magnetic fields. The superconductivity is destroyed when too great a magnetic field is applied, and the material becomes a normal resistive conductor. Type-II materials remain superconducting in high magnetic fields by allowing the magnetic flux to penetrate the material in the form of discrete quantized vortices which repel each other and interact with defects in the superconducting material. The superconducting material returns to its normal resistive state only at the center of these vortices; the remainder of the material still carries a supercurrent. The vortices experience a Lorentz force from the flowing current and move through the superconductor until they are trapped, or pinned, at defect sites. Using molecular dynamics simulations, we explore the microscopic dynamics of vortices interacting with pinning sites under many conditions.

Papers:

1. Reversible to irreversible flow transition in periodically driven vortices
   N. Mangan, C. Reichhardt, and C.J. Olson Reichhardt
   arXiv:0801.1131
   Phys. Rev. Lett. 100, 187002 (2008).
   

2. Devil's staircase and disordering transitions in sliding vortices and Wigner crystals on random substrates with transverse driving
   C. Reichhardt and C.J. Olson Reichhardt
   cond-mat/0606749
   Phys. Rev. B 76, 214305 (2007).
   

3. Probing vortex systems with individual vortex manipulation
   C.J. Olson Reichhardt and C. Reichhardt
   Physica C 460-462, 1284 (2007).
   

4. Statics and dynamics of vortex liquid crystals
   C. Reichhardt and C.J. Olson Reichhardt
   cond-mat/0506783
   Europhys. Lett. 75, 489 (2006).
   

5. Simulations of noise in disordered systems
   C.J. Olson Reichhardt and C. Reichhardt
   Proceedings of SPIE 5112, 236 (2003).
   Online version
   

6. Dynamical behaviors of quasi-1D vortex states: Possible applications to the vortex chain state
   C. Reichhardt and C.J. Olson Reichhardt
   Phys. Rev. B 66, 172504 (2002).
   Online version
   

7. Critical depinning force and vortex lattice order in disordered superconductors
   C.J. Olson, C. Reichhardt, and S. Bhattacharya
   Phys. Rev. B 64, 024518 (2001).
   Online version

8. Transverse depinning in strongly driven vortex lattices with disorder
   C.J. Olson and C. Reichhardt
   Phys. Rev. B 61, R3811 (2000).
   Online version

9. Dynamic vortex phases and pinning in superconductors with twin boundaries
   C. Reichhardt, C.J. Olson, and F. Nori
   Phys. Rev. B 61, 3665 (2000).
   Online version

10. Topological invariants in microscopic transport on rough landscapes: Morphology, hierarchical structure, and Horton analysis of riverlike networks of vortices
    A.P. Mehta, C. Reichhardt, C.J. Olson, and F. Nori
    Phys. Rev. Lett. 82, 3641 (1999).
    Online version

11. Nonequilibrium dynamic phase diagram for vortex lattices
    C.J. Olson, C. Reichhardt, and F. Nori
    Phys. Rev. Lett. 81, 3757 (1998).
    Online version

12. Fractal networks, braiding channels, and voltage noise in intermittently flowing rivers of quantized magnetic flux
    C.J. Olson, C. Reichhardt, and F. Nori
    Phys. Rev. Lett. 80, 2197 (1998).
    Online version
    Online images
    

13. Plastic flow, voltage noise and vortex avalanches in superconductors
    C.J. Olson, C. Reichhardt, J. Groth, S.B. Field, and F. Nori
    Physica C 290, 89 (1997).
    Online version
    Online movies.
    

14. Superconducting vortex avalanches, voltage bursts, and vortex plastic flow: Effect of the microscopic pinning landscape on the macroscopic properties
    C.J. Olson, C. Reichhardt, and F. Nori
    Phys. Rev. B 56, 6175 (1997).
    Online version

15. Vortex plastic motion in twinned superconductors
    J. Groth, C. Reichhardt, C.J. Olson, S.B. Field, and F. Nori
    Phys. Rev. Lett. 77, 3625 (1996).
    Online version

16. Microscopic derivation of magnetic-flux-density profiles, magnetization hysteresis loops, and critical currents in strongly pinned superconductors
    C. Reichhardt, C.J. Olson, J. Groth, S. Field, and F. Nori
    Phys. Rev. B 52, 10441 (1995).
    Online version

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Last Modified: 1/1/02