Impurity states of a quasi-two-dimensional ferromagnet

The spectrum of impurity states of a quasi-two-dimensional ferromagnet is studied. The energies of s-, p-, d-, and f- states are determined as functions of the exchange interaction of an impurity atom with matrix atoms for various ratios of inter- and intralayer exchange interactions between matrix atoms. It is shown that, unlike in the three-dimensional case, local s1 and d-states can exist for a weakly coupled impurity.

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