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  • Open Access

Unusual half-metallic state in unconventional magnets

Yuri B. Kudasov*

  • *Contact author: yu_kudasov@yahoo.com
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APS Open Sci. 1, 000141 – Published 18 September, 2026

DOI: https://doi.org/10.1103/n2gs-tsrp

Abstract

Half-metallic ferromagnets exhibit a gap in the density of states for one spin projection while remaining gapless for the opposite spin. We show that in helimagnets an unusual half-metallic state can exist, where the spin projection that experiences the gap is determined by the direction of the wave vector. This state originates from the nontrivial topology of the band structure, specifically from the dispersion forming a multisheeted covering over the Brillouin zone. We present two-dimensional tight-binding models for p-wave and f-wave half metals. These structures can be realized in crystalline and van der Waals systems. The complex band structure of the unusual p-wave half metal in nanostructures is also discussed. In a quantum well, a standing wave with a helical spin structure is formed, and a persistent spin current exists.

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Information

APS Open Sci. 1, 000141– Published 18 September, 2026
Vol. 1
  • Received 25 June 2026
  • Accepted 8 September 2026
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Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.

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