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Coexistence of ferroelectricity and altermagnetism in wurtzite vanadium oxide: a first-principles study

Abid ZamanDepartment of Physics, Riphah International University, Islamabad 44000, PakistanSalhah Hamed AlrefaeeDepartment of Chemistry, College of Science, Taibah University, Yanbu Governorate, Saudi ArabiaHifsa ShahidDepartment of Electrical Engineering, College of Engineering, Qassim University, Unayzah, Saudi ArabiaTatyana OrlovaDepartment of Physics and its Teaching Methods, National Pedagogical University of Uzbekistan, Tashkent, UzbekistanAeshah AlrubayyiDepartment of Science and Technology, University College at Nairiyah, University of Hafr Al Batin (UHB), Nairiyah, 31981, Saudi ArabiaReem AlreshidiDepartment of Physics, College of Science, Northern Border University, Arar, Saudi ArabiaVineet TirthCentre for Engineering and Technology Innovations, King Khalid University, Abha 61421, Aseer, Kingdom of Saudi ArabiaAli AlgahtaniMechanical Engineering Department, College of Engineering, King Khalid University, Abha 61421, Aseer, Kingdom of Saudi Arabia

RSC Advancesjournal2026en

ABI

Annotatsiya

along the [001] direction, substantially higher than conventional perovskite ferroelectrics. The polarization switching process, with a moderate energy barrier of 0.71 eV per f.u., confirms its ferroelectric reversibility. Strikingly, reversing the ferroelectric polarization induces a complete reversal of spin character near the Fermi level, thereby electrically toggling the spin-resolved electronic structure without altering the total magnetization. These findings establish w-VO as a rare multiferroic altermagnet in which ferroelectric polarization and compensated spin order are intrinsically coupled. The ability to control spin polarization and spin Hall response through electric-field-driven polarization switching offers a new paradigm for non-volatile, field-free spintronic devices based on voltage-controlled spin functionality.

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Mavzular

Multiferroics and related materials Magnetic and transport properties of perovskites and related materials Magnetic Properties and Synthesis of Ferrites

Identifikatorlar

DOI: 10.1039/d5ra08930a

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