Skip to content
DraconiticResearch
Search Sources API
203,234 studies31 sourcesUpdated 17 min ago
PreprintarXiv licencearXiv

Spontaneous magnetic diode effect in Co1/3TaS2

  • Yining Hu
  • Taikang Chen
  • Jan Priessnitz
  • Zili Feng
  • Takashi Kurumaji
  • Linda Ye
  • Libor Šmejkal
  • Chunyu Mark Guo
  • Philip J. W. Moll
Open at sourcePDFDOICite

Abstract

When electrons move through non-trivial spin textures in magnetic metals, conduction electrons couple to magnetic order through both their charge and their spin, acquiring non-trivial equations of motion and a dynamic spin polarization providing the foundation of spintronics. These mechanisms are, however, almost invariably reciprocal and the resistance a current encounters does not depend on its flow direction. Here we show that a chiral crystal lattice and an independently reversible chiral magnetic order together produce a diode whose forward direction is set by the magnetism rather than by the structure. In the triangular-lattice antiferromagnet Co1/3TaS2, whose chiral lattice hosts a chiral magnetic order of its own, independent handedness, we observe a pronounced nonreciprocal resistance. Unlike conventional electrical magnetochiral anisotropy, which is driven by an external magnetic field, our spontaneous magnetic diode effect arises from an internal noncoplanar spin texture with vanishing net magnetization. Symmetry analysis and model calculations show that the effect originates from the interplay of noncoplanar spin order and spin-orbit coupling, which generates a chiral, time-reversal-symmetry-breaking electronic response. Crucially, reversing the magnetic handedness reverses the sign of the nonreciprocal resistance, demonstrating magnetic control of the diode polarity.

Related

  1. Spontaneous topological diode effect induced by non-coplanar antiferromagnetic order
    Nguyen Duy Khanh, Hirotaka Takagi, Rina Takagi +9
    arXivPreprintCC BY 4.0Full textCondensed matterarXiv
  2. In-plane and out-of-plane magnetic field driven Josephson diode effect in magic-angle twisted four-layer graphene
    Marta Perego, Sayan Banerjee, Mohamad Abu El Hija +8
    arXivPreprintarXiv licenceFull textCondensed matterarXiv
  3. 10-fs-level laser-to-RF timing jitter of a directly diode-pumped Ti:sapphire oscillator
    Seong-Hoon Kwon, Seonghoon Jung, Chang-ki Min
    Optics ExpressPeer-reviewedPublisher termsOptics & photonicsCrossref
  4. Differential phase recovery from correlated long-baseline fiber interferometers using a DFB diode source
    Anneshwa Dey, Paul G. Sibley, Malcolm B. Gray +1
    Optics ExpressPeer-reviewedPublisher termsOptics & photonicsCrossref
  5. Semiconductor optical amplification of a diode-pumped 1-GHz Ti:sapphire oscillator
    Kavyasree Anilkumar, Hanna Ostapenko, Benjamin Forman +4
    Optics ExpressPeer-reviewedLicence not statedOptics & photonicsCrossref

Cite

BibTeXRIS
BibTeX
@misc{hu2026spontaneous,
  title = {{Spontaneous magnetic diode effect in Co$_1/3$TaS$_2$}},
  author = {Yining Hu and Taikang Chen and Jan Priessnitz and Zili Feng and Takashi Kurumaji and Linda Ye and Libor Šmejkal and Chunyu Mark Guo and Philip J. W. Moll},
  howpublished = {arXiv},
  year = {2026},
  month = oct,
  doi = {10.48550/arxiv.2610.34586},
  eprint = {2610.34586},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2610.34586},
}
RIS
TY  - UNPB
TI  - Spontaneous magnetic diode effect in Co_1/3TaS_2
AU  - Yining Hu
AU  - Taikang Chen
AU  - Jan Priessnitz
AU  - Zili Feng
AU  - Takashi Kurumaji
AU  - Linda Ye
AU  - Libor Šmejkal
AU  - Chunyu Mark Guo
AU  - Philip J. W. Moll
PY  - 2026
DA  - 2026/10/25
PB  - arXiv
DO  - 10.48550/arxiv.2610.34586
UR  - https://arxiv.org/abs/2610.34586
AB  - When electrons move through non-trivial spin textures in magnetic metals, conduction electrons couple to magnetic order through both their charge and their spin, acquiring non-trivial equations of motion and a dynamic spin polarization providing the foundation of spintronics. These mechanisms are, however, almost invariably reciprocal and the resistance a current encounters does not depend on its flow direction. Here we show that a chiral crystal lattice and an independently reversible chiral magnetic order together produce a diode whose forward direction is set by the magnetism rather than by the structure. In the triangular-lattice antiferromagnet Co_1/3TaS_2, whose chiral lattice hosts a chiral magnetic order of its own, independent handedness, we observe a pronounced nonreciprocal resistance. Unlike conventional electrical magnetochiral anisotropy, which is driven by an external magnetic field, our spontaneous magnetic diode effect arises from an internal noncoplanar spin texture with vanishing net magnetization. Symmetry analysis and model calculations show that the effect originates from the interplay of noncoplanar spin order and spin-orbit coupling, which generates a chiral, time-reversal-symmetry-breaking electronic response. Crucially, reversing the magnetic handedness reverses the sign of the nonreciprocal resistance, demonstrating magnetic control of the diode polarity.
ER  -