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Soliton phase near antiferromagnetic quantum critical point in Q1D conductors

L. P. Gor'kov·P. D. Grigoriev
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Abstract

In the frameworks of a nesting model for Q1D organic conductor at the antiferromagnetic (SDW) quantum critical point the first-order transition separates metallic state from the soliton phase having the periodic domain structure. The low temperature phase diagram also displays the 2nd-order transition line between the soliton and the uniformly gapped SDW phases. The results agree with the phase diagram of (TMTSF)$_2$PF$_6$ near critical pressure [T. Vuletic et al., Eur. Phys. J. B 25, 319 (2002)]. Detection of the 2nd-order transition line is discussed. We comment on superconductivity at lowest temperature.

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L. P. Gor'kov, P. D. Grigoriev. 2005-02-18. Soliton phase near antiferromagnetic quantum critical point in Q1D conductors. https://doi.org/10.1209/epl%2Fi2005-10089-y

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