Kondo effect
= Kondo effect
{c}
{wiki}
Antiferromagnetic exchange between a localized magnetic moment and conduction <electrons> produces strong low-energy correlations and screening of the moment. In a dilute magnetic-impurity metal, a resistance minimum and a low-temperature logarithmic increase are characteristic signatures over an appropriate temperature range. The strong-coupling low-temperature regime cannot be obtained by extending the logarithm indefinitely.