English

Is the nonlinear Meissner effect unobservable?

Superconductivity 2009-10-31 v3

Abstract

We examine the effects of nonlocal electrodynamics for a d-wave superconductor on the field dependence of the magnetic penetration depth. The linear field dependence predicted in the local limit, commonly known as the nonlinear Meissner effect, is instead found to be quadratic, δλH2\delta\lambda\sim H^2 for fields below a crossover scale HH^*. This crossover is shown to be geometry dependent and for most orientations of the screening currents is of the same order as or greater than Hc1H_{c1}, implying that the nonlinear Meissner effect can not be observed. For special orientations where the current flows along the nodal directions, however, the nonlinear Meissner effect may be recovered.

Keywords

Cite

@article{arxiv.cond-mat/9808249,
  title  = {Is the nonlinear Meissner effect unobservable?},
  author = {M. -R. Li and P. J. Hirschfeld and P. Woelfle},
  journal= {arXiv preprint arXiv:cond-mat/9808249},
  year   = {2009}
}

Comments

4 pages, RevTeX, 1 ps figure; typoes corrected; final version