Chirality-Driven Orbital Angular Momentum and Circular Dichroism in CoSi
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| Main Authors: | , , , , , , , , , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866929302980788224 |
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| author | Brinkman, Stefanie Suzanne Tan, Xin Liang Brekke, Bjørnulf Mathisen, Anders Christian Finnseth, Øyvind Schenk, Richard Justin Hagiwara, Kenta Huang, Meng-Jie Buck, Jens Kalläne, Matthias Hoesch, Moritz Rossnagel, Kai Yang, Kui-Hon Ou Lin, Minn-Tsong Shu, Guo-Jiun Chen, Ying-Jiun Tusche, Christian Bentmann, Hendrik |
| author_facet | Brinkman, Stefanie Suzanne Tan, Xin Liang Brekke, Bjørnulf Mathisen, Anders Christian Finnseth, Øyvind Schenk, Richard Justin Hagiwara, Kenta Huang, Meng-Jie Buck, Jens Kalläne, Matthias Hoesch, Moritz Rossnagel, Kai Yang, Kui-Hon Ou Lin, Minn-Tsong Shu, Guo-Jiun Chen, Ying-Jiun Tusche, Christian Bentmann, Hendrik |
| contents | Chiral crystals and molecules were recently predicted to form an intriguing platform for unconventional orbital physics. Here, we report the observation of chirality-driven orbital textures in the bulk electronic structure of CoSi, a prototype member of the cubic B20 family of chiral crystals. Using circular dichroism in soft X-ray angle-resolved photoemission, we demonstrate the formation of a bulk orbital-angular-momentum texture and monopole-like orbital-momentum locking that depends on crystal handedness. We introduce the intrinsic chiral circular dichroism, icCD, as a differential photoemission observable and a natural probe of chiral electron states. Our findings render chiral crystals promising for spin-orbitronics applications. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2404_02952 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Chirality-Driven Orbital Angular Momentum and Circular Dichroism in CoSi Brinkman, Stefanie Suzanne Tan, Xin Liang Brekke, Bjørnulf Mathisen, Anders Christian Finnseth, Øyvind Schenk, Richard Justin Hagiwara, Kenta Huang, Meng-Jie Buck, Jens Kalläne, Matthias Hoesch, Moritz Rossnagel, Kai Yang, Kui-Hon Ou Lin, Minn-Tsong Shu, Guo-Jiun Chen, Ying-Jiun Tusche, Christian Bentmann, Hendrik Materials Science Mesoscale and Nanoscale Physics Chiral crystals and molecules were recently predicted to form an intriguing platform for unconventional orbital physics. Here, we report the observation of chirality-driven orbital textures in the bulk electronic structure of CoSi, a prototype member of the cubic B20 family of chiral crystals. Using circular dichroism in soft X-ray angle-resolved photoemission, we demonstrate the formation of a bulk orbital-angular-momentum texture and monopole-like orbital-momentum locking that depends on crystal handedness. We introduce the intrinsic chiral circular dichroism, icCD, as a differential photoemission observable and a natural probe of chiral electron states. Our findings render chiral crystals promising for spin-orbitronics applications. |
| title | Chirality-Driven Orbital Angular Momentum and Circular Dichroism in CoSi |
| topic | Materials Science Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2404.02952 |