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Umesh Kumar
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Spontaneous fractional Chern insulators in transition metal dichalcogenide moiré superlattices
H Li, U Kumar, K Sun, SZ Lin
Physical Review Research 3 (3), L032070, 2021
1402021
Probing multi-spinon excitations outside of the two-spinon continuum in the antiferromagnetic spin chain cuprate Sr2CuO3
J Schlappa, U Kumar, KJ Zhou, S Singh, M Mourigal, VN Strocov, ...
Nature communications 9 (1), 5394, 2018
642018
Computing Resonant Inelastic X-Ray Scattering Spectra Using The Density Matrix Renormalization Group Method
A Nocera, U Kumar, N Kaushal, G Alvarez, E Dagotto, S Johnston
Scientific Reports 8 (1), 11080, 2018
272018
Particle-hole asymmetry in the dynamical spin and charge responses of corner-shared 1D cuprates
S Li, A Nocera, U Kumar, S Johnston
Communications Physics 4 (1), 217, 2021
262021
Inverse Faraday effect in Mott insulators
S Banerjee, U Kumar, SZ Lin
Physical Review B 105 (18), L180414, 2022
252022
Floquet engineering of Kitaev quantum magnets
U Kumar, S Banerjee, SZ Lin
Communications Physics 5 (1), 1-9, 2022
242022
Multi-spinon and antiholon excitations probed by resonant inelastic x-ray scattering on doped one-dimensional antiferromagnets
U Kumar, A Nocera, E Dagotto, S Johnston
New Journal of Physics 20 (7), 073019, 2018
242018
Theoretical study of the spin and charge dynamics of two-leg ladders as probed by resonant inelastic x-ray scattering
U Kumar, A Nocera, E Dagotto, S Johnston
Physical Review B 99 (20), 205130, 2019
222019
Unraveling higher-order contributions to spin excitations probed using resonant inelastic x-ray scattering
U Kumar, A Nag, J Li, HC Robarts, AC Walters, M García-Fernández, ...
Physical Review B 106 (6), L060406, 2022
12*2022
Three-body bound states in antiferromagnetic spin ladders
G Schmiedinghoff, L Müller, U Kumar, GS Uhrig, B Fauseweh
Communications Physics 5 (1), 218, 2022
112022
Inducing and controlling superconductivity in the Hubbard honeycomb model using an electromagnetic drive
U Kumar, SZ Lin
Physical Review B 103 (6), 064508, 2021
112021
Spectroscopic signatures of next-nearest-neighbor hopping in the charge and spin dynamics of doped one-dimensional antiferromagnets
U Kumar, A Nocera, G Price, K Stiwinter, S Johnston, T Datta
Physical Review B 102 (7), 075134, 2020
92020
Softening of excitation in the resonant inelastic x-ray scattering spectra as a signature of Hund's coupling in nickelates
U Kumar, C Melnick, G Kotliar
arXiv preprint arXiv:2310.00983, 2023
72023
Crossover of high-energy spin fluctuations from collective triplons to localized magnetic excitations in Sr14−xCaxCu24O41 ladders
Y Tseng, J Thomas, W Zhang, E Paris, P Puphal, R Bag, G Deng, ...
npj Quantum Materials 7 (1), 92, 2022
62022
Predicting Fractionalized Multi-Spin Excitations in Resonant Inelastic X-ray Spectra of Frustrated Spin-1/2 Trimer Chains
S Pal, U Kumar, M Kumar, A Mukherjee
arXiv preprint arXiv:2410.15082, 2024
2024
Theoretical analysis of multi-magnon Excitations in 2D Antiferromagnet probed by Resonant Inelastic X-ray Scattering (RIXS)
S PAL, U Kumar, P Prabhakar, A Mukherjee
Bulletin of the American Physical Society, 2024
2024
Theoretical analysis of multimagnon excitations in resonant inelastic x-ray scattering spectra of two-dimensional antiferromagnets
S Pal, U Kumar, Prabhakar, A Mukherjee
Physical Review B 108 (21), 214405, 2023
2023
Theoretical study of resonant inelastic x-ray scattering spectra of nickelates
U Kumar, G Kotliar
APS March Meeting Abstracts 2023, Z55. 004, 2023
2023
Floquet engineering of Kitaev quantum magnets
S Lin, U Kumar, S Banerjee
APS March Meeting Abstracts 2022, B64. 005, 2022
2022
Inducing and controlling superconductivity in Hubbard honeycomb model using an electromagnetic drive
U Kumar, SZ Lin
Bulletin of the American Physical Society, 2021
2021
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Articles 1–20