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Unveiling the ultrafast optoelectronic properties of 3D Dirac semi-metal Cd3As2

Abstract:
We employ ultrafast optical-pump terahertz-probe spectroscopy and ultrafast THz emission spectroscopy to investigate the ultrafast charge carrier dynamics in the 3D Dirac semi-metal CdAs. We extract the temperature-dependent electron mobility (16,000cmVs at 5K) for CdAs nanowire ensemble. We also demonstrate strong THz emission from both CdAs single crystal and nanowires, whose polarity depends strongly on incident angle and pump polarisation.
Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1109/IRMMW-THZ46771.2020.9370806

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Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Condensed Matter Physics
Role:
Author
ORCID:
0000-0001-7920-6973


Publisher:
IEEE
Host title:
Proceedings of the 45th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz 2020)
Article number:
389
Publication date:
2021-03-11
Acceptance date:
2020-11-08
Event title:
45th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz 2020)
Event location:
Buffalo, New York, USA
Event website:
https://www.irmmw-thz.org/current-conference/home
Event start date:
2020-11-08
Event end date:
2020-11-13
DOI:
EISSN:
2162-2035
ISSN:
2162-2027
ISBN:
9781728166209


Language:
English
Keywords:
Pubs id:
1170658
Local pid:
pubs:1170658
Deposit date:
2021-10-20

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