Fragility of the magnetic order in the prototypical altermagnet RuO${}_2$

Abstract

Altermagnetism is a topic that has lately been gaining attention and the RuO${}_2$ compound is among one of the most studied altermagnetic candidates. However, the survey of available literature on RuO${}_2$ properties suggests that there is no consensus about the magnetism of this material. By performing density functional theory calculations, we show that the electronic properties of stoichiometric RuO${}_2$ are described in terms of a smaller Hubbard $U$ within DFT+$U$ than the value required to have magnetism. We further argue that Ru vacancies can actually aid the formation of a magnetic state in RuO${}_2$. This in turn suggests that a characterization of the amount of Ru vacancies in experimental samples might help the resolution of the controversy between the different experimental results.

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Cited by in corpus (42)

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• Superconducting phenomena in systems with unconventional magnets
• Structure, control, and dynamics of altermagnetic textures
• Fermi-liquid behavior of non-altermagnetic RuO${}_2$
• Crystal structure and absence of magnetic order in single crystalline RuO${}_2$
• Spin and Orbital Magnetism by Light in Rutile Altermagnets
• Magnetic geometry induced quantum geometry and nonlinear transports
• Fragile Unconventional Magnetism in RuO${}_2$ by Proximity to Landau-Pomeranchuk Instability
• Multiband transport in RuO${}_2$
• Spin-Splitting Magnetoresistance in Altermagnetic RuO2 Thin Films
• Magnon spectrum of altermagnets beyond linear spin wave theory: Magnon-magnon interactions via time-dependent matrix product states vs. atomistic spin dynamics
• Determination of the Néel vector in rutile altermagnets through x-ray magnetic circular dichroism: the case of MnF${}_2$
• Universal Scaling Behavior of Transport Properties in Non-Magnetic RuO${}_2$
• Strain controlled g- to d-wave transition in altermagnetic CrSb
• Altermagnetic Instabilities from Quantum Geometry
• Controlling photo-excited electron-spin by light-polarization in ultrafast-pumped altermagnets
• Symmetry-breaking induced surface magnetization in non-magnetic RuO${}_2$
• Origin of Anomalous Hall effect in Cr-doped RuO${}_2$
• The Fermi surface of RuO2 measured by quantum oscillations
• First-principles study on tunnel magnetoresistance effect with Cr-doped RuO${}_2$ electrode
• Constraints on magnetism and correlations in RuO${}_2$ from lattice dynamics and Mössbauer spectroscopy
• Exploration of Altermagnetism in $\mathrm{Ru}{\mathrm{O}}_2$
• Nonlocal damping of spin waves in a magnetic insulator induced by normal, heavy, or altermagnetic metallic overlayer: A Schwinger-Keldysh field theory approach
• Altermagnetism, ARPES, symmetry, non-relativistic band splitting
• Surface-Localized Magnetic Order in RuO2 Thin Films Revealed by Low-Energy Muon Probes
• Magnetic-field-tuned randomness in inhomogeneous altermagnets
• Observation of mirror-odd and mirror-even spin texture in ultrathin epitaxially strained RuO2 films
• Non-Altermagnetic Origin of Exchange Bias Behaviors in Incoherent RuO${}_2$/Fe Bilayer Heterostructures
• Ferromagnetic interface engineering of spin-charge conversion in RuO${}_2$
• Spin-resolved quasiparticle interference patterns on altermagnets via non-spin-resolved scanning tunneling microscopy
• Rational Control of Magnonic and Electronic Band Splittings
• Marginal Metals and Kosterlitz-Thouless Type Phase Transition in Disordered Altermagnets
• Angle-Dependent Magnetoresistance Induced by Interface-Generated Spin Current in RuO${}_2$/Permalloy Heterostructures
• Approaches to tunnel magnetoresistance effect with antiferromagnets
• Absence of magnetic order in epitaxial RuO2 revealed by X-ray linear dichroism
• Altermagnetism from the viewpoint of chemistry
• Moiré-resonant surface state in ultrathin RuO${}_2$
• Absence of magnetic order and magnetic fluctuations in RuO${}_2$
• Two-Dimensional Magnetic Materials from Ferromagnetism to Altermagnetism: Fabrication, Symmetry, Evidence, and Device Readiness
• Quantum oscillation fingerprints of altermagnetism in hole-doped RuO2