Ultrafast scattering dynamics of coherent phonons in Bi1−x Sb x in the Weyl semimetal phase

Ultrafast scattering dynamics of coherent phonons in Bi1−x Sb x in the Weyl semimetal phase

We investigate ultrafast phonon dynamics in the Bi _1− _x Sb _x alloy system for various compositions x using a reflective femtosecond pump-probe technique. The coherent optical phonons corresponding to the A _1 _g local vibrational modes of Bi–Bi, Bi–Sb, and Sb–Sb are generated and observed in the...

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Bibliographic Details
Main Authors: Yuta Komori, Yuta Saito, Paul Fons, Muneaki Hase
Format: Article
Language:English
Published: IOP Publishing 2021-01-01
Series:New Journal of Physics
Subjects:
coherent phonon
phonon scattering
ultrafast spectroscopy
topological materials
Online Access:https://doi.org/10.1088/1367-2630/abe2c0

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