| Autor: |
Keiter, Hellmut, Kurkijärvi, Juhani |
| Zdroj: |
Zeitschrift für Physik B Condensed Matter & Quanta; 1977, Vol. 26 Issue 2, p169-176, 8p |
| Abstrakt: |
A one dimensional, nonlinear, singular integral equation was recently shown to be equivalent to Suhl's dispersion equations for the Kondo-problem of a half-spin magnetic impurity in a finite magnetic field. We investigate this integral equation further analytically and numerically and obtain numerical solutions which we use for a calculation of transport coefficients. The normal part of the scattering potential of the magnetic impurity is included via an s-wave phase shift δ. The transport coefficients are universal functions of the ratios T/T and B/B of the temperature T and the zero magnetic field Kondo-temperature T and of the magnetic induction B and the Kondo magnetic induction B. We find maxima in the electrical and thermal resistivities as functions of T/T for B≈B. These are typical Kondo phenomena, and can be influenced by δ. Interference of δ and the phases of Kondo-scattering amplitudes leads to dramatic effects in the thermopower and the Hall coefficient. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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