Real-space nanoimaging of THz polaritons in the topological insulator Bi2Se3

Shu Chen; Andrei Bylinkin; Zhengtianye Wang; Martin Schnell; Greeshma Chandan; Peining Li; Alexey Y. Nikitin; Stephanie Law; Rainer Hillenbrand

doi:10.1038/s41467-022-28791-x

Nature Communications (Mar 2022)

Real-space nanoimaging of THz polaritons in the topological insulator Bi2Se3

Shu Chen,
Andrei Bylinkin,
Zhengtianye Wang,
Martin Schnell,
Greeshma Chandan,
Peining Li,
Alexey Y. Nikitin,
Stephanie Law,
Rainer Hillenbrand

Affiliations

Shu Chen: CIC nanoGUNE BRTA
Andrei Bylinkin: CIC nanoGUNE BRTA
Zhengtianye Wang: Department of Materials Science and Engineering, University of Delaware, Newark
Martin Schnell: CIC nanoGUNE BRTA
Greeshma Chandan: Department of Materials Science and Engineering, University of Delaware, Newark
Peining Li: Wuhan National Laboratory for Optoelectronics & School of Optical and Electronic Information, Huazhong University of Science and Technology
Alexey Y. Nikitin: Donostia International Physics Center (DIPC)
Stephanie Law: Department of Materials Science and Engineering, University of Delaware, Newark
Rainer Hillenbrand: IKERBASQUE, Basque Foundation for Science

DOI: https://doi.org/10.1038/s41467-022-28791-x
Journal volume & issue: Vol. 13, no. 1
pp. 1 – 9

Abstract

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The real-space imaging of propagating THz polaritons, coupled light-matter excitations, in topological insulators has been elusive so far. Here, the authors report spectroscopic THz near-field images of the topological insulator Bi2Se3 revealing polaritons formed by coupling of THz radiation to optical phonons and various charge carriers.

Published in Nature Communications

ISSN: 2041-1723 (Online)
Publisher: Nature Portfolio
Country of publisher: United Kingdom
LCC subjects: Science
Website: https://www.nature.com/ncomms/

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