Tunable optical spin Hall effect in a liquid crystal microcavity

Katarzyna Lekenta; Mateusz Król; Rafał Mirek; Karolina Łempicka; Daniel Stephan; Rafał Mazur; Przemysław Morawiak; Przemysław Kula; Wiktor Piecek; Pavlos G. Lagoudakis; Barbara Piętka; Jacek Szczytko

doi:10.1038/s41377-018-0076-z

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Tunable optical spin Hall effect in a liquid crystal microcavity

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- Tunable optical spin Hall effect in a liquid crystal microcavity
- Tunable optical spin Hall effect in a liquid crystal microcavity
- 光：科学与应用 2018年7卷第6期页码：650-655
- Affiliations：
  
  1.Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Warsaw, Poland
  2.Institute of Applied Physics, Military University of Technology, Warsaw, Poland
  3.Institute of Chemistry, Military University of Technology, Warsaw, Poland
  4.Department of Physics and Astronomy, University of Southampton, Southampton, SO17 1BJ, UK
  5.Skolkovo Institute of Science and Technology Novaya St., 100, Skolkovo, 143025, Russian Federation
- Author bio：
  
  Katarzyna Lekenta (katarzyna.lekenta@fuw.edu.pl)
  Jacek Szczytko (jacek.szczytko@fuw.edu.pl)
- Funds：
- DOI：10.1038/s41377-018-0076-z
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Katarzyna Lekenta, Mateusz Król, Rafał Mirek, 等. Tunable optical spin Hall effect in a liquid crystal microcavity[J]. 光：科学与应用, 2018,7(6):650-655.

Lekenta, K. et al. Tunable optical spin Hall effect in a liquid crystal microcavity. Light: Science & Applications, 7, 650-655 (2018).
Katarzyna Lekenta, Mateusz Król, Rafał Mirek, 等. Tunable optical spin Hall effect in a liquid crystal microcavity[J]. 光：科学与应用, 2018,7(6):650-655. DOI： 10.1038/s41377-018-0076-z.

Lekenta, K. et al. Tunable optical spin Hall effect in a liquid crystal microcavity. Light: Science & Applications, 7, 650-655 (2018). DOI： 10.1038/s41377-018-0076-z.

摘要

Abstract

The spin Hall effect, a key enabler in the field of spintronics, underlies the capability to control spin currents over macroscopic distances. The effect was initially predicted by D'Yakonov and Perel,1,1, and has been recently brought to the foreground by its realization in paramagnetic metals by Hirsch,2,2, and in semiconductors,3,3, by Sih et al. Whereas the rapid dephasing of electrons poses severe limitations to the manipulation of macroscopic spin currents, the concept of replacing fermionic charges with neutral bosons such as photons in stratified media has brought some tangible advances in terms of comparatively lossless propagation and ease of detection,4,4,-,7,7,4-7,. These advances have led to several manifestations of the spin Hall effect with light, ranging from semiconductor microcavities,8,8,9,9, to metasurfaces,10,10,. To date the observations have been limited to built-in effective magnetic fields that underpin the formation of spatial spin currents. Here we demonstrate external control of spin currents by modulating the splitting between transverse electric and magnetic fields in liquid crystals integrated in microcavities.

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references

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