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The anisotropy of the upper critical field of the Chevrel-phase compound Cu1.8Mo6S8

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Abstract

The anisotropy of the upper critical field has been measured on deoxygenated single crystals of the Chevrel-phase Cu1.8Mo6S8. Data were taken with the applied magnetic field pointing in various directions in the hexagonal\((2\overline 1 0)\) and (001) planes. The data reflect the low-temperature, triclinic symmetry of the crystal structure. At each of a series of field values, oscillations in the superconducting transition temperature were observed. Since theH c2 versusT curve is linear in the field region probed, the shape of the anisotropy inT c at constantH is the same as the anisotropy of the upper critical fieldH c2 at constantT. Oscillations with pseudo-threefold symmetry have been observed for the first time in the (001) plane. The data are fitted with an expansion of spherical harmonics with triclinic symmetry.

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Author notes

  1. D. J. Holmgren

    Present address: Amoco Research Center, Naperville, Illinois

Authors and Affiliations

  1. Department of Physics and Materials Research Laboratory, University of Illinois at Urbana-Champaign, 61801, Urbana, Illinois

    B. G. Pazol, D. J. Holmgren & D. M. Ginsberg

Authors
  1. B. G. Pazol
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  2. D. J. Holmgren
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  3. D. M. Ginsberg
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Pazol, B.G., Holmgren, D.J. & Ginsberg, D.M. The anisotropy of the upper critical field of the Chevrel-phase compound Cu1.8Mo6S8 . J Low Temp Phys 73, 229–240 (1988). https://doi.org/10.1007/BF00681979

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  • DOI: https://doi.org/10.1007/BF00681979

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