PreprintCC BY 4.0Physical Review Letters
Orbitronics: orbit-spin interconversions for long range orbital propagation enabled by spin current
Abstract
Orbitronics assumes long-range orbital currents, like spin currents in spintronics. However, recent theories and experiments challenge this view, showing rather local characters for orbital polarization and importance of orbit-spin conversions. In our work, angular momentum is created by ferromagnetic resonance or thermal gradients in Ni/(Pt)Ti/Au heterostructures and detected by conversion to charge current. The observed charge currents are independent of Ti thickness up to 60 nm, which is incompatible with orbital transport and Orbital Hall Effect in Ti. Instead, they depend on both Ti interfaces, evidencing spin-mediated transport in between after and before local orbit–spin interconversions.
Related
- Microscopic foundation for orbitronics: orbital exchange interactions, orbital-dependent transport, and orbital switching
- Physics-informed Learning for Orbital Uncertainty Propagation with Error Bounds
- Prominent Intrinsic Orbital Hall Effect in the 135 Kagome Metal Family and Orbital Responses in the Loop-Current Phase
- Orbital current rectifier and linear magnon Edelstein effect in p-wave antialtermagnets
- Quantum Geometric Origin of Nonlinear Current Induced Orbital Magnetization
BibTeX
@misc{yactayo2026orbitronics,
title = {{Orbitronics: orbit-spin interconversions for long range orbital propagation enabled by spin current}},
author = {Melissa Yactayo and A. Pezo and J. Ampuero and M. Tian and L. Badie and J. Quispe-Marcatoma and C. Landauro and Y. Xu and Sébastien Petit-Watelot and Michel Hehn and A. Fert and J. -C. Rojas-Sánchez},
howpublished = {Physical Review Letters},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2603.28075},
eprint = {2603.28075},
archivePrefix = {arXiv},
url = {https://hal.science/hal-05788582v1},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Orbitronics: orbit-spin interconversions for long range orbital propagation enabled by spin current
AU - Melissa Yactayo
AU - A. Pezo
AU - J. Ampuero
AU - M. Tian
AU - L. Badie
AU - J. Quispe-Marcatoma
AU - C. Landauro
AU - Y. Xu
AU - Sébastien Petit-Watelot
AU - Michel Hehn
AU - A. Fert
AU - J. -C. Rojas-Sánchez
PY - 2026
DA - 2026/10/09
PB - Physical Review Letters
DO - 10.48550/arxiv.2603.28075
UR - https://hal.science/hal-05788582v1
AB - Orbitronics assumes long-range orbital currents, like spin currents in spintronics. However, recent theories and experiments challenge this view, showing rather local characters for orbital polarization and importance of orbit-spin conversions. In our work, angular momentum is created by ferromagnetic resonance or thermal gradients in Ni/(Pt)Ti/Au heterostructures and detected by conversion to charge current. The observed charge currents are independent of Ti thickness up to 60 nm, which is incompatible with orbital transport and Orbital Hall Effect in Ti. Instead, they depend on both Ti interfaces, evidencing spin-mediated transport in between after and before local orbit–spin interconversions.
SN - 0031-9007
SN - 1079-7114
ER -