Journal
APPLIED PHYSICS LETTERS
Volume 111, Issue 9, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4985688
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Funding
- National Key R&D Program of China [2017YFA0206304]
- National Basic Research Program of China [2014CB921101, 2011CB301900]
- National Natural Science Foundation of China [61775093, 61378025, 61427812]
- National Young 1000 Talent Plan
- Jiangsu Shuangchuang Team Program
- Jiangsu NSF [BK20170012, BK20140054]
- Australian Research Council [DP 160101474]
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The hot-carrier relaxation dynamics of Cd3As2 thin films has been investigated by using femtosecond pump-probe spectroscopy in a transmission geometry. A comparative study of degenerate and non-degenerate experiments reveals that hot-carrier distribution in Cd3As2 is established with a time constant of similar to 400 fs. Significantly, the broadband measurements allow the extraction of the time evolution of electron temperature and the carrier-phonon coupling factor g = 5.3 x 10(15) W m(-3) K-1 is deduced by a semiclassical two-temperature model. These results provide fundamental insights into the hot-carrier dynamics of Cd3As2. Published by AIP Publishing.
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