Anisotropy of flux-flow resistivity in UPt3

N. Lutke-Entrup; R. Blaauwgeers; B. Placais; A. Huwley; S. Kambe; M. Krusius; P. Mathieu; Y. Simon

Anisotropy of flux-flow resistivity in UPt3

Superconductivity 2007-05-23 v1 Strongly Correlated Electrons

Authors: N. Lutke-Entrup , R. Blaauwgeers , B. Placais , A. Huwley , S. Kambe , M. Krusius , P. Mathieu , Y. Simon

Abstract

The ac prenetration depth, \lambda_ac(T,H,f), has been measured in superconducting UPt3 single crystals for H\parallel c and H\perp c in the range f=0.01-1MHz and T=0.1-0.4 K. The contributions from bulk pinning and surface pinning have been separated out to yield the flux-flow resistivity \rho_f(H). With H\perp c, rho_f displays magneto-resistance at low field which agrees with previous dc measurements and the characteristic scaling law of clean crystals with anisotropic gap. When H\parallel c, the low-field \rho_f is three times larger. We interpret this property as evidence for flux line with unconventional core structure.

Keywords

flux-flow resistivity UPt3 anisotropy penetration depth superconductivity magnetic field

Cite

@article{arxiv.cond-mat/0009079,
  title  = {Anisotropy of flux-flow resistivity in UPt3},
  author = {N. Lutke-Entrup and R. Blaauwgeers and B. Placais and A. Huwley and S. Kambe and M. Krusius and P. Mathieu and Y. Simon},
  journal= {arXiv preprint arXiv:cond-mat/0009079},
  year   = {2007}
}

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6 pages, 3 figures

Anisotropy of flux-flow resistivity in UPt3

Abstract

Keywords

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