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This study reveals that applying lattice strain to ultrathin layers of ruthenium dioxide induces magnetic states, resolving long-standing debates about its bulk nonmagnetic nature. The findings highlight the critical role of epitaxial strain in stabilizing spin textures and electronic band dispersion within quantum materials like RuO2. Such insights are vital for advancing research into altermagnetism and developing next-generation spintronic devices that rely on precise control over magnetic properties at the nanoscale.

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Unusual metal oxide shows signs of magnetism under lattice strain in ultrathin layers

Phys.org1 august 20264 min de cititArticolul și perspectiva sunt în engleză.

Ruthenium dioxide (RuO2) is a metal oxide that commonly serves as an important metallic conductor, quantum material and industrial electrocatalyst. While there have been debates surrounding the magnetic properties of RuO2, it is generally thought to be nonmagnetic in its bulk form. But now, a new study, published in Science Advances, has found that very thin layers of RuO2 can become magnetic when its lattice is placed under strain.

Proposed spin texture relevant in epitaxially strained RuO2 and a spin-resolved photoemission measurement geometry. Credit: Science Advances (2026). DOI: 10.1126/sciadv.aec2917 Ruthenium dioxide (RuO2) is a metal oxide that commonly serves as an important metallic conductor, quantum material and industrial electrocatalyst. While there have been debates surrounding the magnetic properties of RuO2, it is generally thought to be nonmagnetic in its bulk form. But now, a new study, published in Science Advances, has found that…

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