Publication
Journal of Applied Physics
Paper

Spin density waves in organic metals (invited)

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Abstract

The magnetic properties of the (TMTSF)2X family of organic conductors are reviewed. Susceptibility, ESR, and NMR measurements have led to the conclusion that the metal-insulator transition for X = PF-6, AsF-6, and SbF-6 is driven by the onset of a spin density wave. Near the transition temperature (TSDW), the ESR line shifts, broadens, and rapidly loses intensity. In the semiconducting phase of (TMTSF)2PF6 the static susceptibility is anisotropic and reveals a spin-flop transition at 6 kG. The increase in the proton NMR linewidth yields a value for the SDW amplitude of μ/μB∼ 10-1, in rough agreement with the prediction of mean field theory. Fluctuations near TSDW contribute to proton spin-lattice relaxation.

Date

01 Dec 1982

Publication

Journal of Applied Physics

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