Published 2019 | Version v1
Publication Metadata-only

Near-field THz detection of phonon-polariton modes in thin flakes of topological insulator materials: Bi2Se3 and Bi(Te1-x Sex)3

Pogna E. A. A.
Salemi L.
Garrasi K.
Viti L.
Giordano M.
Vitiello M. S.
Others:
Pogna, E. A. A.
Salemi, L.
Garrasi, K.
Viti, L.
Giordano, M.
Vitiello, M. S.

Description

We report on the study of phonon polaritons modes in thin crystalline flakes of Bi2Se3 and Bi2(Te1-x Sex)3 as a function of the flake thickness, by means of two near-field THz techniques: phase resolved self-detection and THz time domain spectroscopy (TDS-SNOM). Background-free near-field imaging with nanoscale spatial resolution is demonstrated.

Additional details

Identifiers Origin repository
Created:
April 14, 2023
Modified:
November 28, 2023