Logo
ScienceStack
Table of Contents
Fetching ...
Sign In

Is ruthenium dioxide altermagnet?

Alexander A. Tsirlin, Ece Uykur, Oleg Janson

Abstract

Ruthenium dioxide was named as one of the first and most promising altermagnetic candidates with $d$-wave symmetry. We summarize key findings for this material and critically discuss prospects of making it altermagnetic.

Is ruthenium dioxide altermagnet?

Abstract

Ruthenium dioxide was named as one of the first and most promising altermagnetic candidates with -wave symmetry. We summarize key findings for this material and critically discuss prospects of making it altermagnetic.

Paper Structure

This paper contains 1 figure.

Figures (1)

  • Figure 1: (a) Non-symmorphic crystal structure of RuO$_2$ and altermagnetic band splitting. (b,c) Photoemission liu2024 and optical wenzel2025 spectroscopies confirm the absence of band splitting in bulk RuO$_2$. (d) Changing neutron wavelength in the diffraction experiment leads to a suppression of the $(100)$ Bragg peak and points to double diffraction as its origin kessler2024. (e) Nonmagnetic band structure of RuO$_2$ features a Dirac nodal line near the Fermi level. (f) High residual resistivity of thin films uchida2020ruf2021wang2025b compared to bulk wenzel2025 indicates an increased concentration of defects that may also give rise to magnetism observed in some of the thin films. (g) Application of strain is one potential route for making RuO$_2$ magnetic. Panel (b) is reprinted with permission from Ref. liu2024, copyright 2024 by the American Physical Society.