Terahertz characterization of charge carrier dynamics in 3D Dirac semi-metal Cd3As2 nanowires

Optical Pump Terahertz Probe (OPTP) spectroscopy is a well-established measurement technique with which charge-carrier dynamics of semiconductor nanowires (NW) can be extracted in a noncontact manner. Here in this work, we employ OPTP spectroscopy for measuring temperature-dependent photoconductivit...

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Main Authors: Saboon, Y, Damry, D, Xia, CQ, Schoenherr, P, Liu, X, Hesjedal, T, Johnston, MB, Herz, LM, Boland, JL
格式: Conference item
语言:English
出版: IEEE 2023
实物特征
总结:Optical Pump Terahertz Probe (OPTP) spectroscopy is a well-established measurement technique with which charge-carrier dynamics of semiconductor nanowires (NW) can be extracted in a noncontact manner. Here in this work, we employ OPTP spectroscopy for measuring temperature-dependent photoconductivity spectra of 3D Dirac Cd 3 As 2 semi-metal nanowires, revealing a high Extrinsic carrier concentration of ∼2.0x1017cm−3 and ultrahigh carrier mobility of up to ∼13x103cm2V−1s−1 at a temperature of 5 K.