From spin-Peierls to superconductivity: (TMTTF)_2PF_6 under high pressure
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.
Keywords
Cite
@article{arxiv.cond-mat/0005378,
title = {From spin-Peierls to superconductivity: (TMTTF)_2PF_6 under high pressure},
author = {D. Jaccard and H. Wilhelm and D. Jerome and J. Moser and C. Carcel and J. M. Fabre},
journal= {arXiv preprint arXiv:cond-mat/0005378},
year = {2009}
}
Comments
4 pages, revtex, 4 figures (jpeg,eps,png)