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Vortex pinning and stability in the low field, superconducting phases of UPt_3

Shung, E. and Rosenbaum, T. F. and Sigrist, M. (1998) Vortex pinning and stability in the low field, superconducting phases of UPt_3. Physical Review Letters, 80 (5). pp. 1078-1081. ISSN 0031-9007. http://resolver.caltech.edu/CaltechAUTHORS:20140707-163032582

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Abstract

We use an array of miniature Hall probe magnetometers to probe the entry and flow of flux in a single crystal torus or the heavy fermion superconductor UPt_3. Local measurements over the hole are exquisitely sensitive to vortex motion anywhere in the torus, and they permit us to detect avalanches restricted to and with a sharp onset in the lower temperature superconducting phase. Computer simulations support a mechanism dependent upon the degenerate nature of the superconducting order parameter.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1103/PhysRevLett.80.1078DOIArticle
http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.80.1078PublisherArticle
Alternate Title:Vortex pinning and stability in the low field, superconducting phases of UPt3
Additional Information:© 1998 The American Physical Society. Received 25 September 1997. We are grateful to D. G. Hinks for providing the crystals of UPt3. The work at the University of Chicago was supported by NSF No. DMR95-07873. E. S. acknowledges support from the National Science Foundation (DMR91-20000) through the Science and Technology Center for Superconductivity.
Funders:
Funding AgencyGrant Number
NSFDMR95-07873
NSFDMR91-20000
Classification Code:PACS numbers: 74.70.Tx, 74.25.Dw, 74.60.Ge
Record Number:CaltechAUTHORS:20140707-163032582
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20140707-163032582
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:46980
Collection:CaltechAUTHORS
Deposited By: George Porter
Deposited On:10 Jul 2014 22:40
Last Modified:10 Jul 2014 22:40

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