Rigorous results for half-filled Kondo lattices

Hirokazu Tsunetsugu
Phys. Rev. B 55, 3042 – Published 1 February 1997
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Abstract

It is proved that the ground state of the half-filled Kondo lattice is unique and spin singlet. For a wide class of the systems including extra interactions with various topology of the lattice structure, this proof is generalized and the total spin of the ground state is determined. A ferromagnetic ground state appears in some special cases and its criterion is given.

    DOI:https://doi.org/10.1103/PhysRevB.55.3042

    ©1997 American Physical Society

    Authors & Affiliations

    Hirokazu Tsunetsugu

    • Institute of Applied Physics, University of Tsukuba, Tsukuba, Ibaraki 305, Japan

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    Issue

    Vol. 55, Iss. 5 — 1 February 1997

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