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Uniaxial-stress anisotropy of the double superconducting transition in UPt_3

Jin, D. S. and Carter, S. A. and Ellman, B. and Rosenbaum, T. F. and Hinks, D. G. (1992) Uniaxial-stress anisotropy of the double superconducting transition in UPt_3. Physical Review Letters, 68 (10). pp. 1597-1600. ISSN 0031-9007. doi:10.1103/PhysRevLett.68.1597.

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We study the specific heat of single-crystal UPt_3 for uniaxial stress 0≤S≤4 kbar. For S∥c^, the lower and upper superconducting transitions move towards each other in temperature and merge by S=2 kbar and T=485 mK. In the normal state, the Sommerfeld constant γ increases 12% by 2 kbar and then plateaus. By contrast, for S∥a^, γ decreases steadily and the onset T_c’s of the two superconducting transitions remain essentially unchanged, although the specific-heat peaks broaden markedly. Residual strain in the basal plane may account for some crystals of UPt_3 showing only one broad superconducting transition.

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Alternate Title:Uniaxial-stress anisotropy of the double superconducting transition in UPt3
Additional Information:© 1992 The American Physical Society. Received 30 September 1991; revised manuscript received 21 January 1992. The work at The University of Chicago was supported by NSF DMR 8816817. D.S.J. acknowledges support from a National Science Foundation Graduate Fellowship. D.G.H. acknowledges support by the Department of Energy, BES, under Contract No. W-31-109-ENG-38.
Funding AgencyGrant Number
NSFDMR 8816817
NSF Graduate Research FellowshipUNSPECIFIED
Department of Energy (DOE)W-31-109-ENG-38
Issue or Number:10
Classification Code:PACS numbers: 74.70.Tx, 74.30.Ek
Record Number:CaltechAUTHORS:20140707-163037783
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:47015
Deposited By: George Porter
Deposited On:10 Jul 2014 20:15
Last Modified:10 Nov 2021 17:33

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