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PreprintarXiv licencearXiv

Room-Temperature Nonlinear Hall Effect in Polycrystalline Magnetic Multilayers

  • Preet Kamal
  • Amiya Mondal
  • Kanupriya
  • Chirag Kalouni
  • Awadhesh Narayan
  • Debangsu Roy
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Abstract

We report a zero-field nonlinear Hall effect in sputtered polycrystalline Ta/Pt/[Pt/Co/Fe/Ir]5/Pt multilayers from 2 to 300 K. Angle-resolved transport reveals macroscopic in-plane anisotropy and a second-order response. The transverse voltage scales quadratically with current and remains unchanged across magnetization reversal. Conductivity scaling reveals strong scattering contributions, and first-principles calculations yield a symmetry-allowed Berry curvature dipole. Our findings support a mixed intrinsic-extrinsic response and establish a scalable platform for nonlinear electronics

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Cite

BibTeXRIS
BibTeX
@misc{kamal2026roomtemperature,
  title = {{Room-Temperature Nonlinear Hall Effect in Polycrystalline Magnetic Multilayers}},
  author = {Preet Kamal and Amiya Mondal and Kanupriya and Chirag Kalouni and Awadhesh Narayan and Debangsu Roy},
  howpublished = {arXiv},
  year = {2026},
  month = oct,
  doi = {10.48550/arxiv.2607.04754},
  eprint = {2607.04754},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2607.04754},
}
RIS
TY  - UNPB
TI  - Room-Temperature Nonlinear Hall Effect in Polycrystalline Magnetic Multilayers
AU  - Preet Kamal
AU  - Amiya Mondal
AU  - Kanupriya
AU  - Chirag Kalouni
AU  - Awadhesh Narayan
AU  - Debangsu Roy
PY  - 2026
DA  - 2026/10/13
PB  - arXiv
DO  - 10.48550/arxiv.2607.04754
UR  - https://arxiv.org/abs/2607.04754
AB  - We report a zero-field nonlinear Hall effect in sputtered polycrystalline Ta/Pt/[Pt/Co/Fe/Ir]_5/Pt multilayers from 2 to 300 K. Angle-resolved transport reveals macroscopic in-plane anisotropy and a second-order response. The transverse voltage scales quadratically with current and remains unchanged across magnetization reversal. Conductivity scaling reveals strong scattering contributions, and first-principles calculations yield a symmetry-allowed Berry curvature dipole. Our findings support a mixed intrinsic-extrinsic response and establish a scalable platform for nonlinear electronics
ER  -