Superconducting State of the Organic Conductor (TMTSF)2ClO4
J. Shinagawa, Y. Kurosaki, F. Zhang, C. Parker, S. E. Brown, D. Jérome, J. B. Christensen, K. Bechgaard
DOI 10.1103/PhysRevLett.98.147002 · Physical Review Letters
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Abstract
(TMTSF)2ClO4 is a quasi-one-dimensional organic conductor and superconductor with Tc=1.4 K, and one of at least two Bechgaard salts observed to have upper critical fields far exceeding the paramagnetic limit. Nevertheless, the Se77 NMR Knight shift at low fields reveals a decrease in spin susceptibility χs consistent with singlet spin pairing. The field dependence of the spin-lattice relaxation rate at 100 mK exhibits a sharp crossover (or phase transition) at a field Hs∼15 kOe, to a regime where χs is close to the normal state value, even though Hc2≫Hs.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| (TMTSF)2ClO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 1.4 | Pressure not reported | onset |
| (TMTSF)2PF6 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 1.4 | Pressure not reported | unknown |
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