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Anomalous flux pinning in a torus of thoriated UBe_(13)

Zieve, R. J. and Rosenbaum, T. F. and Kim, J. S. and Stewart, G. R. and Sigrist, M. (1995) Anomalous flux pinning in a torus of thoriated UBe_(13). Physical Review B, 51 (17). pp. 12041-12044. ISSN 1098-0121. doi:10.1103/PhysRevB.51.12041.

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We compare the local magnetization at a spatial singularity of superconducting U_(0.97)Th_(0.03)Be_(13) for different magnetic field histories. We find a reduction in the zero-field-cooled vortex flow relative to the field-cooled case, marked by a sharp onset coincident in temperature with the second (lower-temperature) transition in the specific heat. This effect is peculiar to the flux threading the hole of the torus, to (U,Th)Be_(13) samples with multiple superconducting transitions, and to the lower superconducting state with broken time-reversal invariance.

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Alternate Title:Anomalous flux pinning in a torus of thoriated UBe13
Additional Information:© 1995 The American Physical Society. Received 13 February 1995. We are grateful to H. M. Jaeger for the use of his photolithographic facilities. The work at the University of Chicago was supported by NSF DMR92-04820. The work at the University of Florida was supported by DOE DE-FG05-86ER45268.
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Department of Energy (DOE)DE-FG05-86ER45268
Issue or Number:17
Record Number:CaltechAUTHORS:20140707-163035572
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:46998
Deposited By: George Porter
Deposited On:09 Jul 2014 20:26
Last Modified:10 Nov 2021 17:32

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