58 citations · 173 across the 19 of their papers we have counts for
19 papers
Jahn-Teller effect in Mott insulators: Ground states and thermal fluctuations
Kathleen Hart, Ruairidh Sutcliffe, Arun Paramekanti
The interplay of strong atomic spin-orbit coupling with Jahn-Teller (JT) lattice distortions is an important theme in quantum materials hosting heavy atoms. A prototypical example…
Two-orbital model with bond-dependent spin-orbit coupling: A playground for emergent band topology, Kitaev magnetism, and magnetoelectricity
YuZheng Xie, Manoj Gupta, Arun Paramekanti +1
Inspired by the electronic structure of compounds like nickel dihalides Ni (=Cl, Br, I), we propose a low-energy two-orbital model featuring bond-dependent spin-orbit…
d-Wave pair density wave superconductivity in a two-orbital model
Samuel Vadnais, Arun Paramekanti
Motivated by exploring superconductivity in multi-orbital systems, we study two orbital models of spinful fermions representing () or ( orbitals on the sq…
Majorana zero modes in superconductor-magnet heterostructures with d-wave order
Bastien Fajardo, T. Pereg-Barnea, Arun Paramekanti +1
Magnetic skyrmions in proximity to superconductors offer a route to engineering topological superconductivity due to the synthetic spin-orbit coupling engendered by the spin twist…
Searching for superconductivity in doped triangular lattice Kitaev magnets
Andrew Hardy, Ryan Levy, Arun Paramekanti
Motivated by exploring correlated metals with frustrating bond-dependent exchange interactions, we study hole and electron doped Kitaev Mott insulators on the triangular lattice. U…
Pseudo-chiral phonon splitting from octupolar magnetic order
Ruairidh Sutcliffe, Kathleen Hart, Swati Chaudhary +1
Motivated by the recent discovery of anomalously large magnetic response of chiral phonons in dipolar magnets, we explore an extension to study Einstein quantum phonon modes couple…
Symmetry constrained field theories for chiral spin liquid to spin crystal transitions
Anjishnu Bose, Andrew Hardy, Naren Manjunath +2
We consider the spin rotationally invariant Kalmeyer-Laughlin chiral spin liquid (CSL) in systems with broken time-reversal symmetry and explore symmetry constraints on possible co…
Modified large- approach to gapless spin liquids, magnetic orders, and dynamics: Application to triangular lattice antiferromagnets
Anjishnu Bose, Kathleen Hart, Ruairidh Sutcliffe +1
Recent work has shown that the triangular lattice spin- - Heisenberg and XXZ antiferromagnets may exhibit coplanar or supersolid orders proximate to a gapless Dirac…
Spin dynamics of an easy-plane Dirac spin liquid in a frustrated XY model: Application to honeycomb cobaltates
Anjishnu Bose, Arun Paramekanti
Recent work has shown that the honeycomb lattice spin- - XY model, with nearest-neighbor ferromagnetic exchange and frustration induced by third-neighbor antif…
spin-phonon simulations of Floquet dynamics in spin Mott insulators
Ruairidh Sutcliffe, Kathleen Hart, Gil Refael +1
The dynamics of magnetic moments coupled to phonons is of great interest for understanding spin transport in solids as well as for our ability to control magnetism via tailored pho…
Charge ordering and spontaneous topological Hall effect in bilayer skyrmion crystals
Andrew Hardy, Anjishnu Bose, Tanmay Grover +1
Magnetic skyrmion crystals with zero net skyrmion charge and zero topological Hall response are interesting candidate phases which can occur at a vanishing magnetic field in centro…
Phonon-driven multipolar dynamics in a spin-orbit coupled Mott insulator
Kathleen Hart, Ruairidh Sutcliffe, Gil Refael +1
Motivated by advances in pump-probe experiments and light-driven phenomena, we theoretically study the impact of pumped and driven phonons in Mott insulators which host multipole m…
Multipolar magnetism in vacancy-ordered halide double perovskites
Koushik Pradhan, Arun Paramekanti, Tanusri Saha-Dasgupta
Vacancy-ordered halide double perovskites hosting 4d/5d transition metals have emerged as a distinct platform for investigating unconventional magnetism arising out of the interpla…
Altermagnetism and superconductivity in a multiorbital t-J model
Anjishnu Bose, Samuel Vadnais, Arun Paramekanti
Motivated by exploring doped multi-orbital antiferromagnets (AFMs) and altermagnets (ALMs) we explore minimal - models on the square-octagon lattice which favor such collinea…
Orbital selective order and Potts nematicity from a non-Fermi liquid
YuZheng Xie, Andrew Hardy, Arun Paramekanti
Motivated by systems where a high temperature non-Fermi liquid gives way to low temperature Potts nematic order, we studied a three-orbital Sachdev-Ye-Kitaev (SYK) m…
A Striped Electron Fluid on (111) KTaO
P. Villar Arribi, A. Paramekanti, Michael R. Norman
A recent study has revealed that the low carrier density electron gas (2DEG) induced at the interface of EuO and (111) KTaO exhibits a broken symmetry phase with a strong in-pl…
Spin-orbit entangled j=1/2 moments in BaCeIrO -- a frustrated fcc quantum magnet
A. Revelli, C. C. Loo, D. Kiese +16
We establish the double perovskite BaCeIrO as a nearly ideal model system for j=1/2 moments, with resonant inelastic x-ray scattering indicating a deviation of less than 1%…
Emergent dome of nematic order around a quantum anomalous Hall critical point
A. M. Cook, C. Hickey, A. Paramekanti
We consider a model of spinful fermions on the triangular lattice which exhibits a C=2 Chern insulator (CI) phase with a quantized anomalous Hall effect, sandwiched between two nor…
Theory of metallic double perovskites with spin orbit coupling and strong correlations; application to ferrimagnetic Ba2FeReO6
A. M. Cook, A. Paramekanti
We consider a model of the double perovskite Ba2FeReO6, a room temperature ferrimagnet with correlated and spin-orbit coupled Re t2g electrons moving in the background of Fe moment…