Magnetic excitations in infinite-layer nickelates

H Lu^{1

2}, M Rossi¹, A Nag³, M Osada², D F Li¹, K Lee², B Y Wang², M Garcia-Fernandez³, S Agrestini³, Z X Shen^{1

2}, E M Been¹, B Moritz¹, T P Devereaux^{1

2

4}, J Zaanen⁵, H Y Hwang^{1

2}, Ke-Jin Zhou⁶, W S Lee⁷

Affiliations

¹ Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory and Stanford University, Menlo Park, CA 94025, USA.
² Geballe Laboratory for Advanced Materials, Departments of Physics and Applied Physics, Stanford University, Stanford, CA 94305, USA.
³ Diamond Light Source, Harwell Campus, Didcot OX11 0DE, UK.
⁴ Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305, USA.
⁵ Instituut-Lorentz for theoretical Physics, Leiden University, Niels Bohrweg 2, 2333 CA Leiden, Netherlands.
⁶ Diamond Light Source, Harwell Campus, Didcot OX11 0DE, UK. kejin.zhou@diamond.ac.uk leews@stanford.edu.
⁷ Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory and Stanford University, Menlo Park, CA 94025, USA. kejin.zhou@diamond.ac.uk leews@stanford.edu.

PMID: 34244413
DOI: 10.1126/science.abd7726

Magnetic excitations in infinite-layer nickelates

H Lu et al. Science. 2021.

. 2021 Jul 9;373(6551):213-216.

doi: 10.1126/science.abd7726.

Authors

Affiliations

¹ Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory and Stanford University, Menlo Park, CA 94025, USA.
² Geballe Laboratory for Advanced Materials, Departments of Physics and Applied Physics, Stanford University, Stanford, CA 94305, USA.
³ Diamond Light Source, Harwell Campus, Didcot OX11 0DE, UK.
⁴ Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305, USA.
⁵ Instituut-Lorentz for theoretical Physics, Leiden University, Niels Bohrweg 2, 2333 CA Leiden, Netherlands.
⁶ Diamond Light Source, Harwell Campus, Didcot OX11 0DE, UK. kejin.zhou@diamond.ac.uk leews@stanford.edu.
⁷ Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory and Stanford University, Menlo Park, CA 94025, USA. kejin.zhou@diamond.ac.uk leews@stanford.edu.

PMID: 34244413
DOI: 10.1126/science.abd7726

Abstract

The discovery of superconductivity in infinite-layer nickelates brings us tantalizingly close to a material class that mirrors the cuprate superconductors. We measured the magnetic excitations in these nickelates using resonant inelastic x-ray scattering at the Ni L ₃-edge. Undoped NdNiO₂ possesses a branch of dispersive excitations with a bandwidth of approximately 200 milli-electron volts, which is reminiscent of the spin wave of strongly coupled, antiferromagnetically aligned spins on a square lattice. The substantial damping of these modes indicates the importance of coupling to rare-earth itinerant electrons. Upon doping, the spectral weight and energy decrease slightly, whereas the modes become overdamped. Our results highlight the role of Mottness in infinite-layer nickelates.

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Comment in

A touch more unconventional.
Benckiser E. Benckiser E. Science. 2021 Jul 9;373(6551):157. doi: 10.1126/science.abi6855. Science. 2021. PMID: 34244396 No abstract available.

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Magnetic excitations in infinite-layer nickelates

Affiliations

Magnetic excitations in infinite-layer nickelates

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