Spin–orbit effects in pentavalent iridates: models and materials

S Bhowal, I Dasgupta - Journal of Physics: Condensed Matter, 2021 - iopscience.iop.org
Spin–orbit effects in heavy 5d transition metal oxides, in particular, iridates, have received
enormous current interest due to the prediction as well as the realization of a plethora of …

Dimensional reduction of Kitaev spin liquid at quantum criticality

S Feng, A Agarwala, N Trivedi - Physical Review Research, 2024 - APS
We investigate the fate of the Kitaev spin liquid (KSL) under the influence of an external
magnetic field h in the [001] direction and upon tuning bond anisotropy of the Kitaev …

BCS-BEC crossover in a excitonic magnet

N Kaushal, R Soni, A Nocera, G Alvarez, E Dagotto - Physical Review B, 2020 - APS
The condensation of spin-orbit-induced excitons in t 2 g 4 electronic systems is attracting
considerable attention. At large Hubbard U, antiferromagnetism was proposed to emerge …

Magnetization dynamics fingerprints of an excitonic condensate magnet

N Kaushal, J Herbrych, G Alvarez, E Dagotto - Physical Review B, 2021 - APS
The competition between spin-orbit coupling (SOC) λ and electron-electron interaction U
leads to a plethora of novel states of matter, extensively studied in the context of t 2 g 4 and t …

Luther-Emery liquid and dominant singlet superconductivity in the hole-doped Haldane spin-1 chain

P Laurell, J Herbrych, G Alvarez, E Dagotto - Physical Review B, 2024 - APS
We investigate the pairing tendencies in the hole-doped Haldane spin-1 chain. To allow for
doping, we extend the original spin chain Hamiltonian into a fermionic model involving a two …

Gapless to gapless phase transitions in quantum spin chains

S Feng, G Alvarez, N Trivedi - Physical Review B, 2022 - APS
We investigate spin chains with bilinear-biquadratic (BLBQ) spin interactions as a function of
an applied magnetic field h. At the Uimin-Lai-Sutherland (ULS) critical point we find a …

[PDF][PDF] A statistical approach to topological entanglement: Boltzmann machine representation of high-order irreducible correlation

S Feng, D Kong, N Trivedi - arXiv preprint arXiv:2302.03212, 2023 - scipost.org
High-order correlation is of great theoretical importance in many fields of physics. Its
presence indicates an irreducible many-body correlation/interaction that cannot be …

Luther-Emery liquid and dominant singlet superconductivity in the two-orbital Hubbard chain

P Laurell, J Herbrych, G Alvarez, E Dagotto - arXiv preprint arXiv …, 2023 - arxiv.org
We investigate the pairing tendencies in the two-orbital Hubbard chain at intermediate
repulsive interaction strengths $ U $, and for degenerate orbitals. At half-filling and large $ U …

Fractionalization in Frustrated Quantum Matter

S Feng - 2024 - search.proquest.com
In quantum many-body systems, fractionalization stands as a hallmark of quantum emergent
phenomena, where an elementary degree of freedom, such as an electron, decomposes …