46 citations · 485 across the 26 of their papers we have counts for
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Range of biquadratic and triquadratic Heisenberg effective couplings deduced from multiorbital Hubbard models
Rahul Soni, Nitin Kaushal, Cengiz Şen +3
We studied a multi-orbital Hubbard model at half-filling for two and three orbitals per site on a two-site cluster via full exact diagonalization, in a wide range for the onsite re…
Magnetization dynamics fingerprints of an excitonic condensate magnet
Nitin Kaushal, Jacek Herbrych, Gonzalo Alvarez +1
The competition between spin-orbit coupling and electron-electron interaction leads to a plethora of novel states of matter, extensively studied in the context of $t_{2g}^4…
Multitude of Topological Phase Transitions in Bipartite Dice and Lieb Lattices with Interacting Electrons and Rashba Coupling
Rahul Soni, Amit Bikram Sanyal, Nitin Kaushal +3
We report the results of a Hartree-Fock study applied to interacting electrons moving in two different bipartite lattices: the dice and the Lieb lattices, at half-filling. Both lat…
Oxygen magnetic polarization, nodes in spin density, and zigzag spin order in oxides
Ling-Fang Lin, Nitin Kaushal, Cengiz Şen +3
Recent DFT calculations for Ba2CoO4 (BCO) and neutron scattering experiments for SrRuO3 (SRO) have shown that oxygen develops a magnetic polarization. Moreover, DFT calculations fo…