Journal of Low Temperature Physics

, Volume 27, Issue 1–2, pp 125–138 | Cite as

The anisotropy of the upper critical field in lead-indium alloys

  • N. Ohta
  • T. Ohtsuka


The anisotropy of the upper critical field Hc2 has been investigated for six Pb-In alloys with indium concentration ranging from 1 to 20 at%. This concentration range corresponds to 2<λ<4 for the impurity parameter λ. The measured anisotropy curves were analyzed by fitting to an expansion in cubic harmonics and it is shown that the dependence of the coefficient for the leading anisotropy term on the impurity parameter at a fixed reduced temperature and on temperature at a fixed value of the impurity parameter can be described well by theory based on nonlocality assuming nearly local conditions, provided the Fermi surface properties do not change appreciably with alloying.


Indium Anisotropy Magnetic Material Local Condition Surface Property 
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Copyright information

© Plenum Publishing Corporation 1977

Authors and Affiliations

  • N. Ohta
    • 1
  • T. Ohtsuka
    • 1
  1. 1.Department of PhysicsTohoku UniversitySendaiJapan

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