Helicity- and Azimuthal-Dependent Topological Photocurrents in Bi2Se3 using THz Spectroscopy

Blair C. Connelly; George J. de Coster; Patrick J. Taylor

doi:10.1364/CLEO_SI.2022.STh2O.2

Conference on Lasers and Electro-Optics
Technical Digest Series (Optica Publishing Group, 2022),
paper STh2O.2
•https://doi.org/10.1364/CLEO_SI.2022.STh2O.2

Helicity- and Azimuthal-Dependent Topological Photocurrents in Bi₂Se₃ using THz Spectroscopy

Blair C. Connelly, George J. de Coster, and Patrick J. Taylor

CLEO: Science and Innovations 2022

San Jose, California United States
15–20 May 2022
ISBN: 978-1-957171-05-0

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Topological Photonics and Quantum Materials (STh2O)

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B. C. Connelly, G. J. de Coster, and P. J. Taylor, "Helicity- and Azimuthal-Dependent Topological Photocurrents in Bi2Se3 using THz Spectroscopy," in Conference on Lasers and Electro-Optics, Technical Digest Series (Optica Publishing Group, 2022), paper STh2O.2.

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Abstract

Enhancement of helicity-dependent topological photocurrents in epitaxially-grown Bi₂Se₃ with reduced twinning is investigated with polarization-sensitive time-domain THz spectroscopy. Strong dependence of the circular and linear photogalvanic effects are observed to correlate with the azimuthal angle.

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