dorsal/arxiv
View SchemaAn Exact Energy Conservation Law for Magneto-Optical Nanoparticles
| Authors | Jorge Olmos-Trigo |
|---|---|
| Categories | |
| ArXiv ID | 2601.10255vv1 |
| URL | https://arxiv.org/abs/2601.10255 |
| License | http://creativecommons.org/licenses/by/4.0/ |
Abstract
Energy conservation imposes fundamental bounds on the polarizabilities of nanoparticles (NPs). While such bounds are well established for isotropic and bianisotropic NPs, they remain unexplored for magneto-optical NPs. Here, we derive the exact energy-conservation law governing the electric and magnetic dipolar response of axially symmetric magneto-optical NPs under general illumination conditions and arbitrary external magnetic fields. Two central results follow from energy conservation: (i) purely magneto-optical scattering, where the non-magnetic polarizability vanishes, is fundamentally forbidden, and (ii) strong magneto-optical scattering regimes, in which the magneto-optical polarizability dominates, are intriguingly allowed.
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"abstract": "Energy conservation imposes fundamental bounds on the polarizabilities of nanoparticles (NPs). While such bounds are well established for isotropic and bianisotropic NPs, they remain unexplored for magneto-optical NPs. Here, we derive the exact energy-conservation law governing the electric and magnetic dipolar response of axially symmetric magneto-optical NPs under general illumination conditions and arbitrary external magnetic fields. Two central results follow from energy conservation: (i) purely magneto-optical scattering, where the non-magnetic polarizability vanishes, is fundamentally forbidden, and (ii) strong magneto-optical scattering regimes, in which the magneto-optical polarizability dominates, are intriguingly allowed.",
"arxiv_id": "2601.10255",
"authors": [
"Jorge Olmos-Trigo"
],
"categories": [
"physics.optics",
"physics.app-ph"
],
"license": "http://creativecommons.org/licenses/by/4.0/",
"title": "An Exact Energy Conservation Law for Magneto-Optical Nanoparticles",
"url": "https://arxiv.org/abs/2601.10255",
"version": "v1"
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