Influence of spin-orbit interactions on the cubic crystal-field states   of the d4 system*
  It has been shown that for the highly-correlated d4 electronic system the spin-orbit interactions produce, even in case of the cubic crystal-field interactions, a singlet ground state. Its magnetic moment grows rapidly with the applied magnetic field approaching 4 uB for the Eg state, but only 3 uB for the T2g state. The applicability of the present results to the Mn3+ ion in LaMnO3 is discussed.   Keywords: crystal-field, spin-orbit, orbital moment.   PACS: 71.70.E, 75.10.D 
R.J. Radwanski, Z.Ropka