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Spin fluctuations sufficient to mediate superconductivity in nickelates

DOI: 10.1103/PhysRevB.109.235126 DOI Help

Authors: Paul Worm (TU Wien) , Qisi Wang (Universität Zürich; The Chinese University of Hong Kong;) , Motoharu Kitatani (University of Hyogo; RIKEN Center for Emergent Matter Sciences (CEMS)) , Izabela Bialo (Universität Zürich; AGH University of Krakow) , Qiang Gao (Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences) , Xiaolin Ren (Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences) , Jaewon Choi (Diamond Light Source) , Diana Csontosová (Masaryk University) , Ke-Jin Zhou (Diamond Light Source) , Xingjiang Zhou (Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences) , Zhihai Zhu (Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences) , Liang Si (Northwest University; TU Wien) , Johan Chang (Universität Zürich) , Jan M. Tomczak (King's College London; TU Wien) , Karsten Held (TU Wien)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Physical Review B , VOL 109

State: Published (Approved)
Published: June 2024
Diamond Proposal Number(s): 30189

Abstract: Infinite-layer nickelates show high-temperature superconductivity, and the experimental phase diagram agrees well with the one simulated within the dynamical vertex approximation (D⁢Γ⁢A). Here, we compare the spin-fluctuation spectrum behind these calculations to resonant inelastic x-ray scattering experiments. The overall agreement is good. This independent cross validation of the strength of spin fluctuations strongly supports the scenario, advanced by D⁢Γ⁢A, that spin fluctuations are the mediator of the superconductivity observed in nickelates.

Journal Keywords: High-temperature superconductors; Nickelates; Strongly correlated systems; Hubbard model; Resonant inelastic x-ray scattering

Subject Areas: Materials, Physics


Instruments: I21-Resonant Inelastic X-ray Scattering (RIXS)

Added On: 19/06/2024 12:02

Discipline Tags:

Superconductors Quantum Materials Physics Hard condensed matter - structures Materials Science

Technical Tags:

Scattering Resonant Inelastic X-ray Scattering (RIXS)