Ground state of the kondo lattice
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Kazuo Ueda; Kouki Yamamoto
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Article
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1990
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Elsevier Science
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English
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The one-dimensional Kondo lattice is diagonalized numerically. It is shown that the ground state is ferromagnetic at low densities of conduction electrons. On the other hand at half-filling the ground state is a singlet with stronq antiferromagnetic correlations which are localized spins.