Electrical conductivity of metal microcontacts containing magnetic impurities
A. N. Omel’yanchukPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR, Khar’kovI. G. TuluzovPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR, Khar’kov
ABI
Abstract
This study deals with the effect of electron scattering by impurities with localized magnetic moments on the electrical conductivity of a metal microcontact. It is demonstrated that the second derivative of the current with respect to the voltage (microcontact spectrum) contains a nonlinearity in the low-voltage range eV ∼ T (zero bias anomalies). The sign of a zero bias anomaly is determined by the sign of the exchange integral J.
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