# 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

#### 3 Citations

Coupled spin–orbital fluctuations in a three orbital model for 4d and 5d oxides with electron fillings n = 3, 4, 5—application to NaOsO3, Ca2RuO4 and Sr2IrO4

- Physics, Medicine
- Journal of physics. Condensed matter : an Institute of Physics journal
- 2021

The characteristic features of the coupled spin–orbital excitations are related to the complex magnetic behavior resulting from the interplay between electronic bands, spin–orbit coupling, Coulomb interactions, and structural distortion effects, as realized in the compounds NaOsO3, Ca2RuO4, and Sr2IrO4. Expand

Magnetic reorientation transition in a three orbital model for {\boldmath $\rm Ca_2 Ru O_4$} --- Interplay of spin-orbit coupling, tetragonal distortion, and Coulomb interactions.

- Physics, Medicine
- Journal of physics. Condensed matter : an Institute of Physics journal
- 2020

This investigation yields a planar antiferromagnetic (AFM) order for moderate tetragonal distortion, with easy $a-b$ plane and easy $b$ axis anisotropies, along with small canting of the dominantly $yz,xz$ orbital moments. Expand

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