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2002•International Journal of Modern Physics BRequires access

KONDO IMPURITY MODEL FOR ANOMALOUS RESISTIVITY OF IMPURE Zr-Cu SUPERCONDUCTOR

A. K. Mondal, Sanjukta Roy

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Abstract

Resistivity expressions are derived for disordered Zr 50- Cu 50 alloy considering the Kondo impurity model with extended BCS term to check the anomaly appearing above superconducting transition temperature as observed. The resistivity behaviors are discussed below and above the Kondo temperature and compared with the anomalies reported experimentally. Very good agreement between theoretical and experimental, natures of the resistivity curves are reported with a change in density of states (DOS) at the Fermi surface.

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Resistivity expressions are derived for disordered Zr 50- Cu 50 alloy considering the Kondo impurity model with extended BCS term to check the anomaly appearing above superconducting transition temperature as observed. The resistivity behaviors are discussed below and above the Kondo temperature and compared with the anomalies reported experimentally. Very good agreement between theoretical and experimental, natures of the resistivity curves are reported with a change in density of states (DOS) at the Fermi surface.

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Available abstract

Resistivity expressions are derived for disordered Zr 50- Cu 50 alloy considering the Kondo impurity model with extended BCS term to check the anomaly appearing above superconducting transition temperature as observed. The resistivity behaviors are discussed below and above the Kondo temperature and compared with the anomalies reported experimentally. Very good agreement between theoretical and experimental, natures of the resistivity curves are reported with a change in density of states (DOS) at the Fermi surface.

Key concepts: Electrical resistivity and conductivity, Condensed matter physics, Impurity, Superconductivity, Kondo effect, Anomaly (physics), Materials science, Fermi surface

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