Evidence of Cooper pair diffraction on the vortex lattice of superconducting niobium

@article{Maisuradze2013EvidenceOC,
  title={Evidence of Cooper pair diffraction on the vortex lattice of superconducting niobium},
  author={Alexander Maisuradze and Alain Le Yaouanc and Rustem Khasanov and Alex Amato and Christopher Baines and Dieter M Herlach and Rudolf Henes and P. Keppler and Hugo Keller},
  journal={Physical Review B},
  year={2013},
  volume={88},
  pages={140509}
}
We investigated the Abrikosov vortex lattice (VL) of a pure Niobium single crystal with the muon spin rotation (\mu SR) technique. Analysis of the \mu SR data in the framework of the BCS-Gor'kov theory allowed us to determine microscopic parameters and the limitations of the theory. With decreasing temperature the field variation around the vortex cores deviates substantially from the predictions of the Ginzburg-Landau theory and adopts a pronounced conical shape. This is evidence of partial… 
3 Citations

Figures from this paper

Field dependence of the superconducting gap in YPd2Sn: A μSR and NMR study
We have performed muon spin rotation/relaxation and 119Sn nuclear magnetic resonance (NMR) measurements to study the vortex state of polycrystalline samples of YPd2Sn (Tc = 5.4 K), over a wide range
Universal scaling of the self-field critical current in superconductors: from sub-nanometre to millimetre size
TLDR
This work demonstrates the universal size scaling of the self-field critical current for any superconductor, of any symmetry, geometry or band multiplicity, across the huge range of sample dimensions, from single-atomic-layer to mm-scale.
Thermodynamic Parameters of Single‐ or Multi‐Band Superconductors Derived from Self‐Field Critical Currents
Key questions for any superconductor include: what is its maximum dissipation-free electrical current (its ‘critical current') and can this be used to extract fundamental thermodynamic parameters?