Vortex Pinning and Stability in the Low Field, Superconducting Phases of UPt3
E. Shung, T. F. Rosenbaum, M. Sigrist
DOI 10.1103/PhysRevLett.80.1078 · Physical Review Letters
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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 of the heavy fermion superconductor UPt3. 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.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| UPt3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 0.5 | Pressure not reported | unknown |
| UPt3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 0.45 | Pressure not reported | unknown |
| U0.97Th0.03Be13 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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