Landau quantisation of photonic spin Hall effect in monolayer black phosphorus
The photonic spin Hall effect (PSHE) is a promising candidate for controlling the spin states of photons and exploiting next-generation photonic devices based on spinoptics. Herein, the influences of a perpendicular magnetic field on the PSHE appearing on the surface of monolayer black phosphorus (B...
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| Format: | Article |
| Language: | English |
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De Gruyter
2019-12-01
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| Series: | Nanophotonics |
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| Online Access: | http://www.degruyter.com/view/j/nanoph.2020.9.issue-1/nanoph-2019-0424/nanoph-2019-0424.xml?format=INT |
| _version_ | 1818718740984889344 |
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| author | Jia Guangyi Li Geng Zhou Yan Miao Xianglong Zhou Xiaoying |
| author_facet | Jia Guangyi Li Geng Zhou Yan Miao Xianglong Zhou Xiaoying |
| author_sort | Jia Guangyi |
| collection | DOAJ |
| description | The photonic spin Hall effect (PSHE) is a promising candidate for controlling the spin states of photons and exploiting next-generation photonic devices based on spinoptics. Herein, the influences of a perpendicular magnetic field on the PSHE appearing on the surface of monolayer black phosphorus (BP) are investigated. Results reveal that both the in-plane and transverse spin-dependent shifts are quantised and show an oscillating pattern due to the splitting of Landau levels (LLs) induced by the external magnetic field B. And the oscillation period of spin Hall shifts gradually increases with strengthening B because of the increase of LL spacings. By contrast, for a fixed magnetic field, as the LL spacings become smaller and smaller with increasing the LL index, the oscillation period of spin Hall shifts gradually decreases as the photonic energy increases. Moreover, it is possibly due to the synergistic role of intrinsic anisotropy, high crystallinity, and quantisation-incurred localised decreases in beating-like complex conductivities of the BP film, giant spin Hall shifts, hundreds of times of the incident wavelength, are obtained in both transverse and in-plane directions. These unambiguously confirm the strong impact of the external magnetic field on the PSHE and shed important insights into understanding the rich magneto-optical transport properties in anisotropic two-dimensional atomic crystals. |
| first_indexed | 2024-12-17T19:55:52Z |
| format | Article |
| id | doaj.art-fb0909a6a653456dac05695d95c319da |
| institution | Directory Open Access Journal |
| issn | 2192-8614 |
| language | English |
| last_indexed | 2024-12-17T19:55:52Z |
| publishDate | 2019-12-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Nanophotonics |
| spelling | doaj.art-fb0909a6a653456dac05695d95c319da2022-12-21T21:34:37ZengDe GruyterNanophotonics2192-86142019-12-019122523310.1515/nanoph-2019-0424nanoph-2019-0424Landau quantisation of photonic spin Hall effect in monolayer black phosphorusJia Guangyi0Li Geng1Zhou Yan2Miao Xianglong3Zhou Xiaoying4School of Science, Tianjin University of Commerce, Tianjin 300134, P.R. ChinaDepartment of Electrical Engineering, The State University of New York at Buffalo, Buffalo, New York 14260, USASchool of Science, Tianjin University of Commerce, Tianjin 300134, P.R. ChinaDepartment of Electrical Engineering, The State University of New York at Buffalo, Buffalo, New York 14260, USADepartment of Physics and Key Laboratory for Low-Dimensional Structures and Quantum Manipulation (Ministry of Education), Hunan Normal University, Changsha 410081, P.R. ChinaThe photonic spin Hall effect (PSHE) is a promising candidate for controlling the spin states of photons and exploiting next-generation photonic devices based on spinoptics. Herein, the influences of a perpendicular magnetic field on the PSHE appearing on the surface of monolayer black phosphorus (BP) are investigated. Results reveal that both the in-plane and transverse spin-dependent shifts are quantised and show an oscillating pattern due to the splitting of Landau levels (LLs) induced by the external magnetic field B. And the oscillation period of spin Hall shifts gradually increases with strengthening B because of the increase of LL spacings. By contrast, for a fixed magnetic field, as the LL spacings become smaller and smaller with increasing the LL index, the oscillation period of spin Hall shifts gradually decreases as the photonic energy increases. Moreover, it is possibly due to the synergistic role of intrinsic anisotropy, high crystallinity, and quantisation-incurred localised decreases in beating-like complex conductivities of the BP film, giant spin Hall shifts, hundreds of times of the incident wavelength, are obtained in both transverse and in-plane directions. These unambiguously confirm the strong impact of the external magnetic field on the PSHE and shed important insights into understanding the rich magneto-optical transport properties in anisotropic two-dimensional atomic crystals.http://www.degruyter.com/view/j/nanoph.2020.9.issue-1/nanoph-2019-0424/nanoph-2019-0424.xml?format=INTphotonic spin hall effectlandau quantisationmagneto-optical responseblack phosphorus |
| spellingShingle | Jia Guangyi Li Geng Zhou Yan Miao Xianglong Zhou Xiaoying Landau quantisation of photonic spin Hall effect in monolayer black phosphorus Nanophotonics photonic spin hall effect landau quantisation magneto-optical response black phosphorus |
| title | Landau quantisation of photonic spin Hall effect in monolayer black phosphorus |
| title_full | Landau quantisation of photonic spin Hall effect in monolayer black phosphorus |
| title_fullStr | Landau quantisation of photonic spin Hall effect in monolayer black phosphorus |
| title_full_unstemmed | Landau quantisation of photonic spin Hall effect in monolayer black phosphorus |
| title_short | Landau quantisation of photonic spin Hall effect in monolayer black phosphorus |
| title_sort | landau quantisation of photonic spin hall effect in monolayer black phosphorus |
| topic | photonic spin hall effect landau quantisation magneto-optical response black phosphorus |
| url | http://www.degruyter.com/view/j/nanoph.2020.9.issue-1/nanoph-2019-0424/nanoph-2019-0424.xml?format=INT |
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