Andreev scattering in the anisotropic heavy-fermion superconductor UPt3
G. Goll, C. Bruder, H. v. Löhneysen
DOI 10.1103/PhysRevB.52.6801 · Physical Review B
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Abstract
Andreev reflection between a normal metal and a superconductor was employed to investigate the superconducting order parameter of the heavy-fermion superconductor UPt3. In the present work, point-contact spectra are compared with dV/dI curves calculated assuming different order-parameter symmetries, and that the electrons are injected preferentially in the forward direction with an angular spread described by a cone. Various order-parameter structures are compared for nonideal interfaces of d-wave superconductors and different directions of current flow. The analysis favors a two-dimensional order parameter with an orbital part with a line of nodes in the basal plane and point nodes along the c axis.
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. | 0.521 | Pressure not reported | onset |
| UPt3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 0.46 | Pressure not reported | zero_resistance |
| UPt3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 0.506 | Pressure not reported | onset |
| UPt3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 0.439 | Pressure not reported | zero_resistance |
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