Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2006-08-17
J. Magn. Magn. Mater. 310 (2007) 425
Physics
Condensed Matter
Strongly Correlated Electrons
2 pages, 1 figure, ICM2006 proceedings
Scientific paper
The effective mass probed by the de Haas-van Alphen oscillations is studied for a model Ce system under magnetic field higher than the Kondo energy. In the mean-field theory, the mass enhancement per Ce ion in the periodic system is identical with that in the dilute system. With decreasing magnetic field, the effective mass tends to diverge corresponding to a formation of the Kondo ground state. The effective mass can be very different between up and down spins depending on the nature of the 4f wave functions.
Kuramoto Yoshio
Kusunose Hiroaki
Otsuki Junya
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