46 citations · 485 across the 26 of their papers we have counts for
21 papers · 1 filter
Magnetic phase diagram of a two-orbital model for bilayer nickelates varying doping
Ling-Fang Lin, Yang Zhang, Nitin Kaushal +4
Motivated by the recently discovered high- bilayer nickelate superconductor LaNiO, we comprehensively research a bilayer cluster for different el…
Kanamori-Moiré-Hubbard model for transition metal dichalcogenide homobilayers
Nitin Kaushal, Elbio Dagotto
Ab-initio and continuum model studies predicted that the valley transition metal dichalcogenide (TMD) homobilayers could simulate the conventional multi-orbital Hubbard model o…
Magnetic ground states of honeycomb lattice Wigner crystals
Nitin Kaushal, Nicolás Morales-Durán, Allan H. MacDonald +1
Lattice Wigner crystal states stabilized by long-range Coulomb interactions have recently been realized in two-dimensional moiré materials. We employ large-scale unrestricted Hartr…
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…
Orbital ordering in the layered perovskite material CsVF
Ling-Fang Lin, Nitin Kaushal, Yang Zhang +2
In strongly correlated electronic systems, several novel physical properties are induced by the orbital degree of freedom. In particular, orbital degeneracy near the Fermi level le…
Origin of the Magnetic and Orbital ordering in -SrCrO
Bradraj Pandey, Yang Zhang, Nitin Kaushal +5
Motivated by recent experimental progress in transition metal oxides with the KNiF structure, we investigate the magnetic and orbital ordering in -SrCrO. Using f…
Prediction of exotic magnetic states in the alkali metal quasi-one-dimensional iron selenide compound NaFeSe
Bradraj Pandey, Ling-Fang Lin, Rahul Soni +4
The magnetic and electronic phase diagram of a model for the quasi-one-dimensional alkali metal iron selenide compound NaFeSe is presented. The novelty of this material is…
BCS-BEC crossover in a Excitonic Magnet
Nitin Kaushal, Rahul Soni, Alberto Nocera +2
The condensation of spin-orbit-induced excitons in electronic systems is attracting considerable attention. In the large Hubbard U limit, antiferromagnetism was propos…
Emergence of Superconductivity in Doped Multiorbital Hubbard Chains
Niravkumar D. Patel, Nitin Kaushal, Alberto Nocera +2
We introduce a variational state for one-dimensional two-orbital Hubbard models that intuitively explains the recent computational discovery of pairing in these systems when hole d…
Flat Bands and Ferrimagnetic Order in Electronically Correlated Dice-Lattice Ribbons
Rahul Soni, Nitin Kaushal, Satoshi Okamoto +1
We study ribbons of the dice two-dimensional lattice (that we call ``dice ladders'') known to have nontrivial topological properties, such as Chern numbers 2 [Wang and Y. Ran, Phys…
Novel Block Excitonic Condensate at in a Spin-Orbit Coupled Multiorbital Hubbard Model
Nitin Kaushal, Alberto Nocera, Gonzalo Alvarez +2
Theoretical studies recently predicted the condensation of spin-orbit excitons at momentum = in spin-orbit coupled three-orbital Hubbard models at electronic densi…
Spin dynamics of the block orbital-selective Mott phase
J. Herbrych, N. Kaushal, A. Nocera +3
Iron-based superconductors display a variety of magnetic phases originating in the competition between electronic, orbital, and spin degrees of freedom. Previous theoretical invest…
Computing Resonant Inelastic X-Ray Scattering Spectra Using The Density Matrix Renormalization Group Method
A. Nocera, U. Kumar, N. Kaushal +3
We present a method for computing resonant inelastic x-ray scattering (RIXS) spectra in one-dimensional systems using the density matrix renormalization group (DMRG) method. By usi…
Density matrix renormalization group study of a three-orbital Hubbard model with spin-orbit coupling in one dimension
Nitin Kaushal, Jacek Herbrych, Alberto Nocera +4
Using the Density Matrix Renormalization Group technique we study the effect of spin-orbit coupling on a three-orbital Hubbard model in the sector and in one dimensi…
Non Fermi liquid behavior and continuously tunable resistivity exponents in the Anderson-Hubbard model at finite temperature
Niravkumar D. Patel, Anamitra Mukherjee, Nitin Kaushal +2
We employ a recently developed computational many-body technique to study for the first time the half-filled Anderson-Hubbard model at finite temperature and arbitrary correlation…
Spin-orbit interaction driven dimerization in one dimensional frustrated magnets
Shang-Shun Zhang, Nitin Kaushal, Elbio Dagotto +1
We study the effect of spin-orbit interaction on one-dimensional U(1)-invariant frustrated magnets with dominant critical nematic fluctuations. The spin-orbit coupling explicitly b…
Non-local correlations in the orbital selective Mott phase of a one dimensional multi-orbital Hubbard model
Shaozhi. Li, N. Kaushal, Y. Wang +6
We study non-local correlations in a three-orbital Hubbard model defined on an extended one-dimensional chain using determinant quantum Monte Carlo and density matrix renormalizati…
Orbital-selective Mott phases of a one-dimensional three-orbital Hubbard model studied using computational techniques
Guangkun Liu, Nitin Kaushal, Shaozhi Li +6
A recently introduced one-dimensional three-orbital Hubbard model displays orbital-selective Mott phases with exotic spin arrangements such as spin block states [J. Rincón {\em et…