Evidence from $^{77}$Se Knight shifts for triplet superconductivity in (TMTSF)$_2$PF$_6$

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dc.creatorLee, I. J.
dc.creatorChow, D. S.
dc.creatorClark, W. G.
dc.creatorStrouse, J.
dc.creatorNaughton, M. J.
dc.creatorChaikin, P. M.
dc.creatorBrown, S. E.
dc.date2000-01-23
dc.date.accessioned2026-07-07T02:36:37Z
dc.date.available2026-07-07T02:36:37Z
dc.descriptionThe layered quasi-one-dimensional molecular superconductor (TMTSF)$_2$PF$_6$ is a very exotic material with a superconducting order parameter whose ground state symmetry has remained ill-defined. Here we present a pulsed NMR Knight shift (K) study of $^{77}$Se measured simultaneously with transport in pressurized (TMTSF)$_2$PF$_6$. The Knight shift is linearly dependent on the electron spin susceptibility $χ_s$, and is therefore a direct measure of the spin polarization in the superconducting state. For a singlet superconductor, the spin contribution to the Knight shift, K$_s$, falls rapidly on cooling through the transition. The present experiments indicate no observable change in K between the metallic and superconducting states, and thus strongly support the hypothesis of triplet p-wave superconductivity in (TMTSF)$_2$PF$_6$.
dc.description4 pages, 4 eps figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0001332
dc.identifierhttp://arxiv.org/abs/cond-mat/0001332
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/15988
dc.subjectSuperconductivity
dc.subjectStrongly Correlated Electrons
dc.titleEvidence from $^{77}$Se Knight shifts for triplet superconductivity in (TMTSF)$_2$PF$_6$
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