Physics – Condensed Matter
Scientific paper
1995-10-18
Physics
Condensed Matter
8 pages, latex, 6 figures upon request
Scientific paper
10.1143/JPSJ.65.19
We investigate magnetization as functions of external magnetic field $H$ in the $U$-infinite Anderson lattice model within the leading order approximation in the $1/N$-expansion. At $T=0$, at $H=H_M$ where the Zeeman energy is equal to a certain characteristic energy in the system, the magnetization curve has a kink and the differential susceptibility $dM/dH$ shows a jump. At finite temperature, $dM/dH$ shows a peak around $H_M$. Its maximum value increases with decreasing $T$ and saturates to a finite value at $T\to 0$. When $H
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