Triplet Superconductivity in an Organic Superconductor Probed by NMR Knight Shift
I. J. Lee, S. E. Brown, W. G. Clark, M. J. Strouse, M. J. Naughton, W. Kang, P. M. Chaikin
DOI 10.1103/PhysRevLett.88.017004 · Physical Review Letters
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Abstract
The nature of the superconducting state in quasi-one-dimensional organic conductors has remained controversial since its discovery. Here we present results of 77Se NMR Knight shift ( Ks) experiments in (TMTSF)2PF6 under 7 kbar of pressure with a magnetic field aligned along the most conducting a axis. We find no noticeable shift in Ks upon cooling through the superconducting transition. Since Ks directly probes the spin susceptibility χs, the fact that χs remains unchanged through the superconducting transition strongly suggests spin-triplet superconductivity.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| (TMTSF)2PF6 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 0.81 | 0.7 GPa | onset |
| (TMTSF)2PF6 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 0.81 | 0.7 GPa | onset |
| Pb Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| UPt3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Sr2RuO4 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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