Anomalous flux pinning in a torus of thoriated UBe{sub 13}
Journal Article
·
· Physical Review, B: Condensed Matter
- The James Franck Institute and Department of Physics, The University of Chicago, Chicago, Illinois 60637 (United States)
- Department of Physics, University of Florida, Gainesville, Florida 32611 (United States)
- Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States)
We compare the local magnetization at a spatial singularity of superconducting U{sub 0.97}Th{sub 0.03}Be{sub 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{sub 13} samples with multiple superconducting transitions, and to the lower superconducting state with broken time-reversal invariance.
- DOE Contract Number:
- FG05-86ER45268
- OSTI ID:
- 44566
- Journal Information:
- Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 17 Vol. 51; ISSN 0163-1829; ISSN PRBMDO
- Country of Publication:
- United States
- Language:
- English
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