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From spin-Peierls to superconductivity: (TMTTF)2PF6 under high pressure

Authors
Jérome, D.
Moser, J.
Carcel, C.
Fabre, J. M.
Published in Journal of Physics. Condensed Matter. 2001, vol. 13, no. 4, p. L89-L95
Abstract The nature of the attractive electron-electron interaction, leading to the formation of Cooper-pairs in unconventional superconductors has still to be fully understood and is subject to intensive research. Here we show that the sequence spin-Peierls, antiferromagnetism, superconductivity observed in (TMTTF)_2PF_6 under pressure makes the (TM)_2X phase diagram universal. We argue that the suppression of the spin-Peierls transition under pressure, the close vicinity of antiferromagnetic and superconducting phases at high pressure as well as the existence of critical antiferromagnetic fluctuations above T_c strongly support the intriguing possibility that the interchain exchange of antiferromagnetic fluctuations provides the pairing mechanism required for bound charge carriers.
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JACCARD, Didier et al. From spin-Peierls to superconductivity: (TMTTF)2PF6 under high pressure. In: Journal of Physics. Condensed Matter, 2001, vol. 13, n° 4, p. L89-L95. https://archive-ouverte.unige.ch/unige:35751

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Deposited on : 2014-04-15

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