Superconducting gap anisotropy caused by a spin-density wave
A. W. Overhauser, L. L. Daemen
DOI 10.1103/PhysRevLett.61.1885 · Physical Review Letters
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Abstract
The Bardeen-Cooper-Schrieffer gap equation for Δ(k) is solved analytically for a simple metal having a spiral or linear spin-density wave. Δ falls to zero at the spin-density-wave energy gap for the spiral case, but falls to a finite (but small) value if the spin-density wave is linearly polarized. The electronic heat capacity in the superconducting state acquires a low-temperature tail, far in excess of a BCS exponential falloff, and similar to the (hitherto enigmatic) behavior observed in pure Pb.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Pb Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 7.2 | Pressure not reported | unknown |
| UBe13 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 0.9 | Pressure not reported | unknown |
| Pb-In0.06 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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