Anomalous Green's Function Theory of the Kondo Effect. I : Complete Solution of Non-Analytic Part in the Single Impurity Problem

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概要

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• A new method of formulating the s-d exchange interaction in terms of quasi-spins of two sorts is proposed in order to solve the perplexed low-temperature problem of the Kondo effect in dilute magnetic alloys with a valid approximation. Linearization of the model hamiltonian and introduction of anomalous Green's functions yield a complete solution at finite temperature T and in the presence of a magnetic field h. The static and dynamical susceptibilities are calculated. Besides derived are compact expressions for the free-energy and for the specific heat, and a relationship between the magnetoresistance and the magnetization. In the limit h=T=0 the localized magnetic moment tends to vanish, which could be regarded as an almost bare spin at high temperatures or high fields. The ground state of the system is found symmetry-breaking.

• 理論物理学刊行会の論文
• 1970-03-25

著者

• Kurata Yasuyuki

  Department Of Physics Hokkaido University : Department Of Physics Kyoto University

関連論文

• On the Existence of Two Singular Points due to the s-d Interaction
• Anomalous Green's Function Theory of the Kondo Effect. II : Pair Correlation of Impurity Spins
• Anomalous Green's Function Theory of the Kondo Effect. I : Complete Solution of Non-Analytic Part in the Single Impurity Problem

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