Direct Observation of Coherent Longitudinal and Shear Acoustic Phonons in TaAs Using Ultrafast X-Ray Diffraction

Direct Observation of Coherent Longitudinal and Shear Acoustic Phonons in TaAs Using Ultrafast X-Ray Diffraction

Using femtosecond time-resolved x-ray diffraction, we investigated optically excited coherent acoustic phonons in the Weyl semimetal TaAs. The low symmetry of the (112) surface probed in our experiment enables the simultaneous excitation of longitudinal and shear acoustic modes, whose dispersion clo...

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Bibliographic Details
Main Authors: Chen, G.F (Author), De La Pena, G.A (Author), Huang, Y. (Author), Krapivin, V. (Author), Lee, M.-C (Author), Maznev, A. (Author), Nelson, K.A (Author), Pezeril, T. (Author), Prasankumar, R.P (Author), Qiu, X.G (Author), Reis, D.A (Author), Shi, J. (Author), Sirica, N. (Author), Teitelbaum, S.W (Author), Trigo, M. (Author), Tutchton, R. (Author), Xu, B. (Author), Yang, R. (Author), Yarotski, D.A (Author), Zhao, L.X (Author), Zhu, J.-X (Author)
Format: Article
Language:English
Published: American Physical Society 2022
Subjects:
Acoustic deformation
Acoustic phonons
Acoustic-phonons
Crystal orientation
Deformation
Direct observations
Electromagnetic wave emission
Electronic structure
Electronic.structure
Femtosecond time-resolved
Phonons
Tantalum compounds
Time resolved x-ray diffractions
Time-resolved X-ray diffraction
Ultra-fast
X ray diffraction
X- ray diffractions
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