Importance of orbital fluctuations for the magnetic dynamics in the heavy-fermion compound SmB6

  title={Importance of orbital fluctuations for the magnetic dynamics in the heavy-fermion compound 
  author={Christopher N. Singh and Wei-Cheng Lee},
  journal={Physical Review B},
The emergent dynamical processes associated with magnetic excitations in heavy-fermion SmB$_6$ are investigated. By imposing multiorbital interactions on a first-principles model, we find the interplay between spin and orbital fluctuations in the $f$ manifold is highly sensitive to local correlations. The magnetic phase diagram constructed at zero temperature reveals quantum critical features with the existence of several competing phases. Within the random phase approximation, we perform a… 

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