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cond-mat.str-el2021★ 16 cited
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…
cond-mat.str-el2021★ 13 cited
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…
cond-mat.str-el2020★ 9 cited
Properties of LaCaMnO Under Extreme Tensile Strain
Cengiz Şen, Elbio R. Dagotto
The complex phase diagram of manganites with simultaneously active spin, charge, orbital, and lattice degrees of freedom continues providing surprises. In a recent groundbreaking e…