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Unusual Angular and Temperature Dependence of the Upper Critical Field in UPt_3

Shivaram, B. S. and Rosenbaum, T. F. and Hinks, D. G. (1986) Unusual Angular and Temperature Dependence of the Upper Critical Field in UPt_3. Physical Review Letters, 57 (10). pp. 1259-1262. ISSN 0031-9007. doi:10.1103/PhysRevLett.57.1259.

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The report measurements of the upper critical field, H_(c2), inclined at various angles with respect to the c axis in the heavy-fermion superconductor UPt_3. The angular anisotropy observed near T_(c)=0.53 K cannot be explained quantitatively by presently available theoretical expressions which consider either isotropic or anisotropic pairing. In addition, we find that the anisotropy apparently disappears at T∼200 mK, only to reemerge at lower temperatures with an opposite sense. We have also studied H_(c2) in the basal plane of this hexagonal crystal and find no angular dependence within the limits of our measurements.

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Alternate Title:Unusual Angular and Temperature Dependence of the Upper Critical Field in UPt3
Additional Information:© 1986 The American Physical Society. Received 2 June 1986. We thank S. B. Field for technical help and we have benefitted from conversations with G. Crabtree, R. A. Klemm, K. Levin, B. Patton, D. Rainer, J. P. Rodriguez, and J. A. Sauls. The work at The University of Chicago was supported by the National Science Foundation under Grant No. DMR 83-51992. The work at Argonne National Laboratory was supported by the U. S. Department of Energy under Contract No. W-31-109-ENG-38. One of us (T.F.R.) acknowledges receipt of an Alfred P. Sloan Research Fellowship.
Funding AgencyGrant Number
NSFDMR 83-51992
Department of Energy (DOE)W-31-109-ENG-38
Alfred P. Sloan FoundationUNSPECIFIED
Issue or Number:10
Classification Code:PACS numbers: 74.60.-w, 74.30.Gn, 74.70.Lp
Record Number:CaltechAUTHORS:20140709-092602280
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:47098
Deposited On:09 Jul 2014 18:17
Last Modified:10 Nov 2021 17:34

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