Magnetic excitations in strained infinite-layer nickelate PrNiO2 films

DOI: 10.1038/s41467-024-49940-4

Authors: Qiang Gao (Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences) , Shiyu Fan (National Synchrotron Light Source II, Brookhaven National Laboratory) , Qisi Wang (Universität Zürich; The Chinese University of Hong Kong) , Jiarui Li (Massachusetts Institute of Technology) , Xiaolin Ren (Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences; University of Chinese Academy of Sciences) , Izabela Bialo (Universität Zürich; AGH University of Krakow) , Annabella Drewanowski (Universität Zürich) , Pascal Rothenbühler (Universität Zürich) , Jaewon Choi (Diamond Light Source) , Ronny Sutarto (Canadian Light Source) , Yao Wang (Clemson University) , Tao Xiang (Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences; University of Chinese Academy of Sciences; Beijing Academy of Quantum Information Sciences) , Jiangping Hu (Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences; University of Chinese Academy of Sciences) , Ke-Jin Zhou (Diamond Light Source) , Valentina Bisogni (National Synchrotron Light Source II, Brookhaven National Laboratory) , Riccardo Comin (Massachusetts Institute of Technology) , Johan Chang (Universität Zürich) , Jonathan Pelliciari (National Synchrotron Light Source II, Brookhaven National Laboratory) , Xingjiang Zhou (Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences; University of Chinese Academy of Sciences; Songshan Lake Materials Laboratory) , Zhihai Zhu (Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences; University of Chinese Academy of Sciences; Songshan Lake Materials Laboratory)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Nature Communications , VOL 15

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

Abstract: Strongly correlated materials respond sensitively to external perturbations such as strain, pressure, and doping. In the recently discovered superconducting infinite-layer nickelates, the superconducting transition temperature can be enhanced via only ~ 1% compressive strain-tuning with the root of such enhancement still being elusive. Using resonant inelastic x-ray scattering (RIXS), we investigate the magnetic excitations in infinite-layer PrNiO2 thin films grown on two different substrates, namely SrTiO3 (STO) and (LaAlO3)0.3(Sr2TaAlO6)0.7 (LSAT) enforcing different strain on the nickelates films. The magnon bandwidth of PrNiO2 shows only marginal response to strain-tuning, in sharp contrast to the enhancement of the superconducting transition temperature Tc in the doped superconducting samples. These results suggest the bandwidth of spin excitations of the parent compounds is similar under strain while Tc in the doped ones is not, and thus provide important empirics for the understanding of superconductivity in infinite-layer nickelates.

Subject Areas: Materials, Physics


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

Added On: 03/07/2024 11:45

Documents:
s41467-024-49940-4.pdf

Discipline Tags:

Surfaces Superconductors Quantum Materials Physics Hard condensed matter - structures Magnetism Materials Science interfaces and thin films

Technical Tags:

Scattering Resonant Inelastic X-ray Scattering (RIXS)