Filtering Spin and Orbital Moment in Centrosymmetric Systems
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arXiv
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| Format: | Preprint |
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2025
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| author | DOnofrio, Luciano Jacopo Mercaldo, Maria Teresa Brzezicki, Wojciech Klosinski, Adam Mazzola, Federico Ortix, Carmine Cuoco, Mario |
| author_facet | DOnofrio, Luciano Jacopo Mercaldo, Maria Teresa Brzezicki, Wojciech Klosinski, Adam Mazzola, Federico Ortix, Carmine Cuoco, Mario |
| contents | The control of spin and orbital angular momentum without relying on magnetic materials is commonly accomplished by breaking of inversion symmetry, which enables charge-to-spin conversion and spin selectivity in electron transfer processes occurring in chiral media. In contrast to this perspective, we show that orbital moment filtering can be accomplished in centrosymmetric systems: the electron states can be selectively manipulated allowing for the preferential transfer of electrons with a particular orbital momentum orientation. We find that orbital moment filtering is indeed efficiently controlled through orbital couplings that break both mirror and rotational symmetries. We provide the symmetry conditions required for the electron transmission to achieve orbital filtering and relate them to the orientation of the orbital moment. The presence of atomic spin-orbit interaction in the centrosymmetric transmission medium leads to the selective filtering of spin and orbital moments. Our findings allow to identify optimal regimes for having highly efficient simultaneous spin and orbital moment filtering. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2502_10773 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Filtering Spin and Orbital Moment in Centrosymmetric Systems DOnofrio, Luciano Jacopo Mercaldo, Maria Teresa Brzezicki, Wojciech Klosinski, Adam Mazzola, Federico Ortix, Carmine Cuoco, Mario Other Condensed Matter Mesoscale and Nanoscale Physics Materials Science The control of spin and orbital angular momentum without relying on magnetic materials is commonly accomplished by breaking of inversion symmetry, which enables charge-to-spin conversion and spin selectivity in electron transfer processes occurring in chiral media. In contrast to this perspective, we show that orbital moment filtering can be accomplished in centrosymmetric systems: the electron states can be selectively manipulated allowing for the preferential transfer of electrons with a particular orbital momentum orientation. We find that orbital moment filtering is indeed efficiently controlled through orbital couplings that break both mirror and rotational symmetries. We provide the symmetry conditions required for the electron transmission to achieve orbital filtering and relate them to the orientation of the orbital moment. The presence of atomic spin-orbit interaction in the centrosymmetric transmission medium leads to the selective filtering of spin and orbital moments. Our findings allow to identify optimal regimes for having highly efficient simultaneous spin and orbital moment filtering. |
| title | Filtering Spin and Orbital Moment in Centrosymmetric Systems |
| topic | Other Condensed Matter Mesoscale and Nanoscale Physics Materials Science |
| url | https://arxiv.org/abs/2502.10773 |