G

GARRASI K.

Last name: GARRASI K.

2019 (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.

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.

Uploaded on: April 14, 2023