Umesh Kumar

Employment

• Oak Ridge National Laboratory
  2024 - Present
• Rutgers University New Brunswick Postdoctoral Associate
  2021 - 2023
• Los Alamos National Laboratory Postdoctoral Research Associate
  2019 - 2021
• The University of Tennessee Knoxville Graduate Research Assistant
  2013 - 2019

Education

• University of Tennessee Knoxville Ph.D.
  2013 - 2019
• Indian Institute of Technology Delhi Bachelor of Technology (B.Tech.)
  2009 - 2013

Projects & Funding

Projects & funding information is unavailable.

Publications (14)

• Theoretical analysis of multimagnon excitations in resonant inelastic x-ray scattering spectra of two-dimensional antiferromagnets
  Subhajyoti Pal, Umesh Kumar, Prabhakar Prabhakar +1 more
  Physical Review B 2023 DOI: 10.1103/PhysRevB.108.214405
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• Crossover of high-energy spin fluctuations from collective triplons to localized magnetic excitations in Sr14−xCaxCu24O41 ladders
  npj Quantum Materials 2022 DOI: 10.1038/s41535-022-00502-1
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• Three-body bound states in antiferromagnetic spin ladders
  Communications Physics 2022 DOI: 10.1038/s42005-022-00986-0
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• Unraveling higher-order contributions to spin excitations probed using resonant inelastic x-ray scattering
  Umesh Kumar, Abhishek Nag, Jiemin Li +9 more
  Physical Review B 2022 DOI: 10.1103/PhysRevB.106.L060406
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• Floquet engineering of Kitaev quantum magnets
  Communications Physics 2022 DOI: 10.1038/s42005-022-00931-1
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• Inverse Faraday effect in Mott insulators
  Physical Review B 2022 DOI: 10.1103/PhysRevB.105.L180414
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• Particle-hole asymmetry in the dynamical spin and charge responses of corner-shared 1D cuprates
  Communications Physics 2021 DOI: 10.1038/s42005-021-00718-w
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• Spontaneous fractional Chern insulators in transition metal dichalcogenide moiré superlattices
  Physical Review Research 2021 DOI: 10.1103/PhysRevResearch.3.L032070
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• Inducing and controlling superconductivity in the Hubbard honeycomb model using an electromagnetic drive
  Physical Review B 2021 DOI: 10.1103/PhysRevB.103.064508
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• Spectroscopic signatures of next-nearest-neighbor hopping in the charge and spin dynamics of doped one-dimensional antiferromagnets
  Physical Review B 2020 DOI: 10.1103/PhysRevB.102.075134
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• Theoretical study of the spin and charge dynamics of two-leg ladders as probed by resonant inelastic x-ray scattering
  Physical Review B 2019 DOI: 10.1103/physrevb.99.205130
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• Probing multi-spinon excitations outside of the two-spinon continuum in the antiferromagnetic spin chain cuprate Sr2CuO3
  Nature Communications 2018 DOI: 10.1038/s41467-018-07838-y
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• Multi-spinon and antiholon excitations probed by resonant inelastic x-ray scattering on doped one-dimensional antiferromagnets
  New Journal of Physics 2018 DOI: 10.1088/1367-2630/aad00a
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• Computing Resonant Inelastic X-Ray Scattering Spectra Using The Density Matrix Renormalization Group Method
  Scientific Reports 2018 DOI: 10.1038/s41598-018-29218-8
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