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Czechoslovak Journal of Physics

, Volume 46, Supplement 3, pp 1815–1816 | Cite as

Renormalization group analysis of weak collective pinning

  • O. S. Wagner
  • G. Blatter
  • H. Bucheli
  • V. B. Geshkenbein
  • A. I. Larkin
HTSC—Vortices (Theory)

Abstract

The effect of impurity disorder on vortex lattices in type-II superconductors is studied within the framework of the weak collective pinning theory. Using a renormalization group approach, we calculate the sizeR c of collectively pinned vortex bundles in the regimea o <R c <λ (small bundles) for isotropic superconductors. We assume weak disorder and neglect thermal effects. Our findings quantitatively refine the lowest-order perturbation result,R c \(\sqrt B \), obtained by Larkin and Ovchinnikov in 1979 (B is the magnetic induction). In particular, we find a different numerical constant in the exponential as well as a new algebraic prefactor. These improvements provide us with a more accurate functional dependence of the critical current on the magnetic field.

Keywords

Vortex Renormalization Group Vortex Lattice Small Length Scale Renormalization Group Analysis 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

References

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Copyright information

© Institute of Physics, Acad. Sci. CR 1996

Authors and Affiliations

  • O. S. Wagner
    • 1
  • G. Blatter
    • 1
  • H. Bucheli
    • 1
  • V. B. Geshkenbein
    • 1
  • A. I. Larkin
    • 2
  1. 1.Theoretische PhysikETH-HönggerbergZürichSwitzerland
  2. 2.L.D. Landau Institute for Theoretical PhysicsMoscowRussia

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