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The case for universality of the phase diagram of the Fabre and Bechgaard salts

Authors
Duprat, R.
Bourbonnais, C.
Jérome, D.
Moser, J.
Carcel, C.
Fabre, J.M.
Published in The European Physical Journal. B, Condensed Matter. 2001, vol. 21, no. 2, p. 175-183
Abstract We report the observation of superconductivity in the spin-Peierls Fabre salt (TMTTF)2PF6 from pressure dependent electrical transport measurements above a threshold of 4.35 GPa. The data complete the sequence of ground states of this compound in the temperature and pressure plane adducing an empirical basis to the universal character of the phase diagram of the Fabre salts and their selenide analogues, the Bechgaard salts. The structure of the phase diagram at the approach of the crossover between spin-density wave and superconducting states is compared with the results of scaling theory of the interplay between both electronic instabilities under pressure. The comparison supports the view that magnetism and superconductivity in these compounds have a common electronic origin.
Keywords Transport propertiesFermions in reduced dimensionsNonconventional mechanismsHigh-pressure and shock-wave effects in solids and liquids
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Other version: http://link.springer.com/10.1007/PL00011120
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WILHELM, Heribert et al. The case for universality of the phase diagram of the Fabre and Bechgaard salts. In: The European Physical Journal. B, Condensed Matter, 2001, vol. 21, n° 2, p. 175-183. https://archive-ouverte.unige.ch/unige:35750

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Deposited on : 2014-04-15

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