Self-trapping of electrons by vortices
Abstract
It is shown that electrons associated with vortices may be self-trapped by lattice deformations. In essence, the deformation creates a well in which part of the electrons associated with vortex cores are trapped. The effect is strongest in superconductors which have a strong electron-phonon coupling, a large coherence length and a significant ratio Δ/epsilonF. The associated lattice deformations have been observed in a spin-polarised neutron scattering experiment on superconducting Nb.
- Publication:
-
EPL (Europhysics Letters)
- Pub Date:
- June 1998
- DOI:
- 10.1209/epl/i1998-00286-8
- Bibcode:
- 1998EL.....42..547K
- Keywords:
-
- 74.60.-w;
- 78.70.Nx;
- Neutron inelastic scattering