Comment on newly found Charge Density Waves in infinite layer Nickelates

J. Pelliciari; N. Khan; P. Wasik; A. Barbour; Y. Li; Y. Nie; J. M. Tranquada; V. Bisogni; C. Mazzoli

Comment on newly found Charge Density Waves in infinite layer Nickelates

Superconductivity 2023-06-28 v1 Materials Science Other Condensed Matter Strongly Correlated Electrons

Authors: J. Pelliciari , N. Khan , P. Wasik , A. Barbour , Y. Li , Y. Nie , J. M. Tranquada , V. Bisogni , C. Mazzoli

Abstract

Recent works[1-3] reported evidence for charge density waves (CDWs) in infinite layer nickelates (112 structure) based on resonant diffraction at the Ni $L_3$ edge measured at fixed scattering angle. We have found that a measurement with fixed momentum transfer, rather than scattering angle, does not show a resonance effect. We have also observed that a nearby structural Bragg peak from the substrate appears due to third harmonic content of the incident beam, and spreads intensity down to the region of the attributed CDW order. This was further confirmed by testing a bare substrate. We suggest procedures to confirm an effective resonant enhancement of a diffraction peak.

Keywords

charge density wave light scattering and cloaking wave scattering in disordered media

Cite

@article{arxiv.2306.15086,
  title  = {Comment on newly found Charge Density Waves in infinite layer Nickelates},
  author = {J. Pelliciari and N. Khan and P. Wasik and A. Barbour and Y. Li and Y. Nie and J. M. Tranquada and V. Bisogni and C. Mazzoli},
  journal= {arXiv preprint arXiv:2306.15086},
  year   = {2023}
}

Comment on newly found Charge Density Waves in infinite layer Nickelates

Abstract

Keywords

Cite

Related papers