Abstract
We report calculations of the energies of 1 s and 2 s donor levels in Ge as functions of magnetic field. The Ge 1 s and 2 s donor eigenstates in fields along the (111) and (100) directions were studied in the effective mass approximation by using variational wave functions. We have made none of the artificial assumptions invoked by previous authors for simplifyingsuch effective mass calculations. To account for the central cell shifts of these levels we generalize to the case of donors in Ge, in a model which has been very successful in predicting the magnetic field dependence of donor central cell corrections in GaAs. Our results cast some doubt on certain recent transition assignments of Gershenzon and Gol'tsman.
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