Structural origin of resonant diffraction in <math xmlns="http://www.w3.org/1998/Math/MathML"><msub><mi>RuO</mi><mn>2</mn></msub></math>

Connor A. Occhialini; Christie Nelson; Alessandro Bombardi; Shiyu Fan; Raul Acevedo-Esteves; Riccardo Comin; Dmitri N. Basov; Maki Musashi; Masashi Kawasaki; Masaki Uchida; Hoydoo You; J. F. Mitchell; Valentina Bisogni; Claudio Mazzoli; Jonathan Pelliciari

doi:10.1103/yr5q-1v1s

Letter

Structural origin of resonant diffraction in ${RuO}_{2}$

Connor A. Occhialini ^1,2,*, Christie Nelson ¹, Alessandro Bombardi³, Shiyu Fan ¹, Raul Acevedo-Esteves ¹, Riccardo Comin ⁴, Dmitri N. Basov², Maki Musashi⁵, Masashi Kawasaki ^5,6 et al.

Masaki Uchida ^7,8, Hoydoo You ⁹, J. F. Mitchell ⁹, Valentina Bisogni ¹, Claudio Mazzoli ¹, and Jonathan Pelliciari ^1,†

¹National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, New York 11973, USA
²Department of Physics, Columbia University, New York, New York 10027, USA
³Diamond Light Source, Harwell Science and Innovation Campus, Didcot, Oxfordshire OX11 0DE, United Kingdom
⁴Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
⁵Department of Applied Physics and Quantum-Phase Electronics Center (QPEC), University of Tokyo, Tokyo 113-8656, Japan
⁶Center for Emergent Matter Science (CEMS), RIKEN, Saitama 351-0198, Japan
⁷Department of Physics, Institute of Science Tokyo, Tokyo 152-8551, Japan
⁸Toyota Physical and Chemical Research Institute (TPCRI), Nagakute 480-1192, Japan
⁹Materials Science Division, Argonne National Laboratory, Lemont, Illinois 60439, USA

^*Contact author: co2625@columbia.edu
^†Contact author: pelliciari@bnl.gov

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Phys. Rev. B 113, L060411 – Published 26 February, 2026

DOI: https://doi.org/10.1103/yr5q-1v1s

Abstract

We report Ru $L_{3}$ -edge resonant X-ray diffraction studies on single-crystal and (001)-oriented epitaxial films of ${RuO}_{2}$ . We investigate the distinct $Q = (100)$ and (001) Bragg-forbidden reflections as a function of incident energy, azimuthal angle, and temperature. The results show that the observed resonant diffraction in ${RuO}_{2}$ is fully consistent with a resonant charge anisotropy signal of structural origin permitted by the parent (nonmagnetic) rutile $P 4_{2} / m n m$ space group. These results significantly constrain the magnetic contribution to the resonant diffraction signal and indicate the unlikely existence of $k = 0$ antiferromagnetic order in ${RuO}_{2}$ .

Physical Review B

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Structural origin of resonant diffraction in ${RuO}_{2}$

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Structural origin of resonant diffraction in RuO2

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Structural origin of resonant diffraction in ${RuO}_{2}$