Magnetic behavior of curium dioxide with a nonmagnetic ground state

  title={Magnetic behavior of curium dioxide with a nonmagnetic ground state},
  author={Fumiaki Niikura and Takashi Hotta},
  journal={Physical Review B},
In order to understand magnetic behavior observed in CmO${}_{2}$ with a nonmagnetic ground state, we numerically evaluate magnetic susceptibility on the basis of a seven-orbital Anderson model with spin-orbit coupling. Naively we do not expect magnetic behavior in CmO${}_{2}$, since Cm is considered to be a tetravalent ion with six $5f$ electrons and the ground state is characterized by $J=0$, where $J$ is total angular momentum. However, there exists a magnetic excited state and the excitation… 

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