Pseudo-spin rotation symmetry breaking by Coulomb interaction terms in spin-orbit coupled systems.

@article{Mohapatra2020PseudospinRS,
  title={Pseudo-spin rotation symmetry breaking by Coulomb interaction terms in spin-orbit coupled systems.},
  author={Shubhajyoti Mohapatra and Avinash Singh},
  journal={Journal of physics. Condensed matter : an Institute of Physics journal},
  year={2020}
}
By transforming from the real-spin-orbital $t_{\rm 2g}$ basis to the spin-orbital entangled pseudo-spin-orbital basis, the pseudo-spin rotation symmetry of the different Coulomb interaction terms is investigated under SU(2) transformation in pseudo-spin space. While the Hubbard and density interaction terms are invariant and therefore preserve spin rotation symmetry, the Hund's coupling and pair-hopping interaction terms explicitly break pseudo-spin rotation symmetry systematically… Expand
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