Rasine
Jul24-08, 06:13 PM
In order for a dilute magnetic alloy to show the kondo effect (resistance minimum at low T), the magnetic impurites must be far apart and non-interacting.
In the Kondo lattice, the magnetic impurities are much closer togeather (one impurity per unit cell), so why does this system show the Kondo effect?
I was reading a paper and they said that this is becuase the exchange parameter J of the RKKY interaction between the impurites is much weaker than the Kondo temperature (Tk). I don't understand how they are comparing J to a temperature.....Maybe they mean at Tk, J is much weaker in kondo lattice systems than in single impurity konodo systems.
In the Kondo lattice, the magnetic impurities are much closer togeather (one impurity per unit cell), so why does this system show the Kondo effect?
I was reading a paper and they said that this is becuase the exchange parameter J of the RKKY interaction between the impurites is much weaker than the Kondo temperature (Tk). I don't understand how they are comparing J to a temperature.....Maybe they mean at Tk, J is much weaker in kondo lattice systems than in single impurity konodo systems.