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Strong coupling in the Kondo problem in the low-temperature region

  • Yu. N. Ovchinnikov
  • A. M. Dyugaev
Solids

Abstract

The magnetic field dependence of the average spin of a localized electron coupled to conduction electrons with an antiferromangetic exchange interaction is found for the ground state. In the magnetic field range μH∼0.5T c (T c is the Kondo temperature) there is an inflection point, and in the strong magnetic field range μHT c , the correction to the average spin is proportional to (T c /μ H)2. In zero magnetic field, the interaction with conduction electrons also leads to the splitting of doubly degenerate spin impurity states.

Keywords

Spectroscopy Magnetic Field Field Theory Elementary Particle Quantum Field Theory 
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Copyright information

© American Institute of Physics 1999

Authors and Affiliations

  • Yu. N. Ovchinnikov
    • 1
  • A. M. Dyugaev
    • 1
  1. 1.L. D. Landau Institute for Theoretical PhysicsMoscowRussia

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