Physics – Condensed Matter – Superconductivity
Scientific paper
2006-04-21
Physics
Condensed Matter
Superconductivity
10 pages, 15 figures, to be submitted to Physical Review B
Scientific paper
10.1103/PhysRevB.74.054511
We report muon spin rotation measurements on a single crystal of the marginal type-II superconductor V. The measured internal magnetic field distributions are modeled assuming solutions of the Ginzburg-Landau (GL) equations for an ideal vortex lattice obtained using (i) an iterative procedure developed by E.H. Brandt, Phys. Rev. Lett. 78, 2208 (1997) and (ii) a variational method. Both models yield qualitatively similar results. The magnetic penetration depth (lambda) and the GL coherence length (xi) determined from the data analysis exhibit strong field dependences, which are attributed to changes in the electronic structure of the vortex lattice. The zero-field extrapolated values of lambda and the GL parameter kappa agree well with values obtained by other experimental techniques that probe the Meissner state.
Callaghan F. D.
Kaiser C. V.
Laulajainen M.
Sonier J. E.
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