Orbital Hall Effect and Angular Momentum Dynamics in Confined Geometries
Fuente:
arXiv
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| Autori principali: | , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866918078306058240 |
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| author | Kiselev, Egor I. Douçot, Benoît Moessner, Roderich |
| author_facet | Kiselev, Egor I. Douçot, Benoît Moessner, Roderich |
| contents | We present an analysis of the orbital Hall effect (OHE) in a strip geometry and derive a formula for the orbital angular momentum (OAM) accumulation at the edges. The result is expressed in terms of band structure parameters and scattering rates, providing a link between experimental observations of the OHE and the underlying microscopics. A key result is that the effective OAM decay rate follows a Dykonov-Perel-like scaling and is inversely proportional to the electron scattering rate, even if the latter is small. Furthermore, investigating OAM transport in an inhomogeneous setting, we show that non-Ohmic flows and spatially varying electric fields result in contributions to the OHE which are distinct from the well known intrinsic and extrinsic mechanisms. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2507_00982 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Orbital Hall Effect and Angular Momentum Dynamics in Confined Geometries Kiselev, Egor I. Douçot, Benoît Moessner, Roderich Mesoscale and Nanoscale Physics We present an analysis of the orbital Hall effect (OHE) in a strip geometry and derive a formula for the orbital angular momentum (OAM) accumulation at the edges. The result is expressed in terms of band structure parameters and scattering rates, providing a link between experimental observations of the OHE and the underlying microscopics. A key result is that the effective OAM decay rate follows a Dykonov-Perel-like scaling and is inversely proportional to the electron scattering rate, even if the latter is small. Furthermore, investigating OAM transport in an inhomogeneous setting, we show that non-Ohmic flows and spatially varying electric fields result in contributions to the OHE which are distinct from the well known intrinsic and extrinsic mechanisms. |
| title | Orbital Hall Effect and Angular Momentum Dynamics in Confined Geometries |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2507.00982 |