Resonance near the Fermi energy in a Kondo lattice
Aliev F. G., Brandt N. B., Moshchalkov V. V., Sluchanko N. E., Chudinov S. M.,Yasnitskii R. L.
An anomalous increase (by a factor of 40-60) in the Hall coefficient RH has been observed in the CeCu2Si2 superconducting Kondo system as the temperature is lowered from 60 to 4 K. This effect is evidence of the formation of a narrow resonance near the Fermi level in CeCu2Si2.