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Article Dans Une Revue Physical Review B: Condensed Matter and Materials Physics (1998-2015) Année : 2000

Magnetism and superconductivity in underscreened Kondo chains

Résumé

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.

Dates et versions

hal-00007695 , version 1 (26-07-2005)

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Edmond Orignac, Natan Andrei. Magnetism and superconductivity in underscreened Kondo chains. Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2000, 62, pp.R763. ⟨10.1103/PhysRevB.62.R763⟩. ⟨hal-00007695⟩
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