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Intrinsic torque on the orbital angular momentum in an electric field
- Source :
- Phys. Rev. B 110, 035427 (2024)
- Publication Year :
- 2023
-
Abstract
- Orbitronics harnesses non-equilibrium densities and flows of electrons orbital angular momentum (OAM). Although the OAM must be long lived to be useful in information processing, the mechanisms leading to OAM non-conservation remain unknown. Here we show that an electric field induces an intrinsic torque on the OAM mediated by the quantum metric tensor, without spin-orbit coupling or magnetic fields. The torque vanishes in pseudospin-1/2 systems with particle-hole symmetry but is nonzero in the presence of nontrivial textures. We discuss implications for topological materials and strategies for experimental observation.
- Subjects :
- Condensed Matter - Mesoscale and Nanoscale Physics
Subjects
Details
- Database :
- arXiv
- Journal :
- Phys. Rev. B 110, 035427 (2024)
- Publication Type :
- Report
- Accession number :
- edsarx.2311.12108
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1103/PhysRevB.110.035427