Analysis of photo-induced chirality and magnetic toroidal moment based on Floquet formalism
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| Main Authors: | , , |
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| Format: | Preprint |
| Published: |
2023
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| _version_ | 1866911847283687424 |
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| author | Hayami, Satoru Yambe, Ryota Kusunose, Hiroaki |
| author_facet | Hayami, Satoru Yambe, Ryota Kusunose, Hiroaki |
| contents | We analyze the condition of photo-induced atomic-scale chirality and magnetic toroidal moment. By performing a high-frequency expansion in the Floquet formalism, we derive an effective static model Hamiltonian from the spinful $s$-$p$ hybridized model of a single atom interacting with an electromagnetic wave with a particular polarization. The lowest-order and third-order contributions in the high-frequency expansion give rise to the coupling to induce an electric toroidal monopole corresponding to microscopic chirality, while the second-order contribution provides the coupling to induce a magnetic toroidal dipole. We also discuss the condition of the polarization of the electromagnetic wave and induced multipoles. Our results stimulate a new direction of controlling unconventional multipoles by electromagnetic waves. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2312_07735 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Analysis of photo-induced chirality and magnetic toroidal moment based on Floquet formalism Hayami, Satoru Yambe, Ryota Kusunose, Hiroaki Strongly Correlated Electrons We analyze the condition of photo-induced atomic-scale chirality and magnetic toroidal moment. By performing a high-frequency expansion in the Floquet formalism, we derive an effective static model Hamiltonian from the spinful $s$-$p$ hybridized model of a single atom interacting with an electromagnetic wave with a particular polarization. The lowest-order and third-order contributions in the high-frequency expansion give rise to the coupling to induce an electric toroidal monopole corresponding to microscopic chirality, while the second-order contribution provides the coupling to induce a magnetic toroidal dipole. We also discuss the condition of the polarization of the electromagnetic wave and induced multipoles. Our results stimulate a new direction of controlling unconventional multipoles by electromagnetic waves. |
| title | Analysis of photo-induced chirality and magnetic toroidal moment based on Floquet formalism |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2312.07735 |