Dynamical unmasking of p-wave magnetism by ac spin and dc orbital polarizations

@misc{li2026dynamical,
  title = {{Dynamical unmasking of $p$-wave magnetism by ac spin and dc orbital polarizations}},
  author = {Yantao Li and Jacob Linder and Pavlo Sukhachov},
  howpublished = {arXiv},
  year = {2026},
  month = sep,
  doi = {10.48550/arxiv.2607.15353},
  eprint = {2607.15353},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2607.15353},
}

TY  - UNPB
TI  - Dynamical unmasking of p-wave magnetism by ac spin and dc orbital polarizations
AU  - Yantao Li
AU  - Jacob Linder
AU  - Pavlo Sukhachov
PY  - 2026
DA  - 2026/09/15
PB  - arXiv
DO  - 10.48550/arxiv.2607.15353
UR  - https://arxiv.org/abs/2607.15353
AB  - Odd-parity magnets have strong spin polarization in momentum space but no net magnetization, making their spin texture hidden from conventional magnetometry. We show that a monochromatic electric field dynamically lifts this cancellation in a p-wave magnet. Within each drive cycle, the field produces a net ac spin polarization linear in the driving field whose interband component is resonantly enhanced at the nonrelativistic exchange gap. Because this polarization oscillates at the drive frequency, it vanishes upon period averaging. The orbital channel follows a different hierarchy: its linear response cancels in momentum space, whereas interband coherence produces a rectified dc orbital polarization at second order when the field has components parallel and transverse to the p-wave spin-splitting direction. Together, the ac spin and dc orbital responses dynamically unmask p-wave magnetism without requiring any spin-orbit coupling.
ER  -