Enhanced and tunable terahertz spin hall effect of reflected light due to tamm plasmons with topological insulators
In this paper, the enhanced photonic spin hall effect (PSHE) of reflected light at terahertz (THz) frequencies is achieved by using a multilayer structure consisting of Bi2Se3, spacer layer, and distributed Bragg reflector structure. This enhanced spin hall effect (SHE) phenomenon originates from th...
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doaj-7b72bb1832ce4f1e96ef184131e027c12020-12-25T05:08:24ZengElsevierResults in Physics2211-37972020-12-0119103392Enhanced and tunable terahertz spin hall effect of reflected light due to tamm plasmons with topological insulatorsLeyong Jiang0Haiqin Deng1Xinye Zhang2Pei Chen3Licheng Wu4Rongqing Yi5Pengcheng Wang6Jie Jiang7Jun Dong8School of Physics and Electronics, Hunan Normal University, Changsha 410081, ChinaSchool of Physics and Electronics, Hunan Normal University, Changsha 410081, ChinaSchool of Physics and Electronics, Hunan Normal University, Changsha 410081, ChinaSchool of Physics and Electronics, Hunan Normal University, Changsha 410081, ChinaSchool of Physics and Electronics, Hunan Normal University, Changsha 410081, ChinaSchool of Physics and Electronics, Hunan Normal University, Changsha 410081, ChinaSchool of Physics and Electronics, Hunan Normal University, Changsha 410081, ChinaHunan Key Laboratory of Super Microstructure and Ultrafast Process, School of Physics and Electronics, Central South University, Changsha 410083, ChinaSchool of Physics and Electronics, Hunan Normal University, Changsha 410081, China; State Key Laboratory of Millimeter Waves, Southeast University, Nanjing 210096, China; Corresponding author at: School of Physics and Electronics, Hunan Normal University, Changsha 410081, China.In this paper, the enhanced photonic spin hall effect (PSHE) of reflected light at terahertz (THz) frequencies is achieved by using a multilayer structure consisting of Bi2Se3, spacer layer, and distributed Bragg reflector structure. This enhanced spin hall effect (SHE) phenomenon originates from the excitation of optical Tamm states (OTSs) at the interface between the Bi2Se3 and distributed Bragg reflector structure. It is found that the PSHE of the reflected light can be flexibly controlled by properly varying the Fermi energy of the topological insulators. Moreover, the spin behavior of the composite structure is also proved sensitive to incidence angle and the dispersion characteristics of the spacer layer, thus making this configuration an effective candidate for developing photonic devices based on photonic PSHE at the terahertz range.http://www.sciencedirect.com/science/article/pii/S2211379720318593Photonic spin hall effectTopological insulatorsOptical tamm statesPhotonic crystal |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Leyong Jiang Haiqin Deng Xinye Zhang Pei Chen Licheng Wu Rongqing Yi Pengcheng Wang Jie Jiang Jun Dong |
spellingShingle |
Leyong Jiang Haiqin Deng Xinye Zhang Pei Chen Licheng Wu Rongqing Yi Pengcheng Wang Jie Jiang Jun Dong Enhanced and tunable terahertz spin hall effect of reflected light due to tamm plasmons with topological insulators Results in Physics Photonic spin hall effect Topological insulators Optical tamm states Photonic crystal |
author_facet |
Leyong Jiang Haiqin Deng Xinye Zhang Pei Chen Licheng Wu Rongqing Yi Pengcheng Wang Jie Jiang Jun Dong |
author_sort |
Leyong Jiang |
title |
Enhanced and tunable terahertz spin hall effect of reflected light due to tamm plasmons with topological insulators |
title_short |
Enhanced and tunable terahertz spin hall effect of reflected light due to tamm plasmons with topological insulators |
title_full |
Enhanced and tunable terahertz spin hall effect of reflected light due to tamm plasmons with topological insulators |
title_fullStr |
Enhanced and tunable terahertz spin hall effect of reflected light due to tamm plasmons with topological insulators |
title_full_unstemmed |
Enhanced and tunable terahertz spin hall effect of reflected light due to tamm plasmons with topological insulators |
title_sort |
enhanced and tunable terahertz spin hall effect of reflected light due to tamm plasmons with topological insulators |
publisher |
Elsevier |
series |
Results in Physics |
issn |
2211-3797 |
publishDate |
2020-12-01 |
description |
In this paper, the enhanced photonic spin hall effect (PSHE) of reflected light at terahertz (THz) frequencies is achieved by using a multilayer structure consisting of Bi2Se3, spacer layer, and distributed Bragg reflector structure. This enhanced spin hall effect (SHE) phenomenon originates from the excitation of optical Tamm states (OTSs) at the interface between the Bi2Se3 and distributed Bragg reflector structure. It is found that the PSHE of the reflected light can be flexibly controlled by properly varying the Fermi energy of the topological insulators. Moreover, the spin behavior of the composite structure is also proved sensitive to incidence angle and the dispersion characteristics of the spacer layer, thus making this configuration an effective candidate for developing photonic devices based on photonic PSHE at the terahertz range. |
topic |
Photonic spin hall effect Topological insulators Optical tamm states Photonic crystal |
url |
http://www.sciencedirect.com/science/article/pii/S2211379720318593 |
work_keys_str_mv |
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