Terahertz Characterization of Charge Carrier Dynamics in 3D Dirac Semi-metal Cd3As2 Nanowires

被引：0
|
作者：
Saboon, Y. [1 ]
Damry, D. [1 ]
Xia, C. Q. [2 ]
Schonherr, P. [2 ]
Liu, X. [1 ]
Hesjeda, T. [2 ]
Herz, L. M. [2 ]
Johnston, M. B. [2 ]
Boland, J. L. [1 ]
机构：
[1] Univ Manchester, Photon Sci Inst, Dept EEE, Oxford Rd, Manchester M13 9PL, England
[2] Univ Oxford, Dept Phys, Clarendon Lab, Parks Rd, Oxford OX1 3PU, England
来源：
2023 48TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES, IRMMW-THZ | 2023年
基金：
英国工程与自然科学研究理事会;
关键词：
D O I：
10.1109/IRMMW-THz57677.2023.10298998
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
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 Cd3As2 semi-metal nanowires, revealing a high Extrinsic carrier concentration of similar to 2.0 x 10(17) cm(-3) and ultrahigh carrier mobility of up to similar to 13 x 10(3) cm(2)V(-1)s(-1) at a temperature of 5 K.
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页数：2
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