Vv. Valkov et Dm. Dzebisashvili, ON THE ANOMALOUS H-DEPENDENCE OF THE AMPLITUDE OF DEHAAS-VANALPHEN-OSCILLATIONS IN CECU2SI2, JETP letters, 67(4), 1998, pp. 289-294
The de Haas-van Alphen effect is studied in heavy-fermion antiferromag
nets near the spin-flip transition is studied. It is shown that the st
rong increase occurring in the amplitude of oscillations near the spin
-flip point in an increasing magnetic held, as observed experimentally
in CeCu2Si2, can be explained by strong single-site correlations and
magnetic ordering in the subsystem of localized electronic states. (C)
1998 American Institute of Physics.