Magnetism and superconductivity in underscreened Kondo chains

Details Magnetism and superconductivity in underscreened Kondo chains Magnetism and superconductivity in underscreened Kondo chains

2000-02-03

arxiv.org/abs/cond-mat/0002061v1

Phys. Rev. B 62 p. 763 (2000)

Physics

Condensed Matter

Strongly Correlated Electrons

no figures, 4 two column pages, RevteX

Scientific paper

10.1103/PhysRevB.62.R763

We present a one dimensional model of electrons coupled to localized moments of spin $S\ge 1$ in which magnetism and superconductivity interplay in a nontrivial manner. This model has a non-Fermi liquid ground state of the chiral spin liquid type. A non-conventional odd-frequency pairing is shown to be the dominant instability of the system, together with antiferromagnetism of the local moments. We argue that this model captures the physics of the Kondo-Heisenberg spin S=1 chain, in the limit of strong Kondo coupling. Finally, we discuss briefly the effect of interchain coupling.

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