Publications associated with Quantum Materials

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

International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2020-November (2020) 389-

JL Boland, CQ Xia, DA Damry, P Schonherr, T Hesjedal, LM Herz, MB Johnston

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.

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