Violation of Local Reciprocity in Charge-Orbital Interconversion
Abstract
We demonstrate a violation of local reciprocity in the interconversion between charge and orbital currents. By investigating orbital torque and orbital pumping in W/Ni bilayers, we show that the charge-orbital interconversion in the bulk of the W layer exhibits opposite signs in the direct and inverse processes-the direct and inverse orbital Hall effects being positive and negative, respectively. This finding provides direct evidence of local nonreciprocity in the charge-orbital interconversion, in agreement with a theoretical prediction. These results highlight the unique characteristics of charge-orbital coupled transport and offer fundamental insights into the mechanisms underlying orbital-current-driven phenomena.
Fields of Study & Subjects
Magnetic properties of thin films
Chemical and Physical Properties of Materials
Physics of Superconductivity and Magnetism
Publication details
- Journal / source
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Volume
- 136
- Issue
- 7
- Pages
- 076702–076702
- Publication date
- 27 January 2026
- Language
- EN