THz Aperture Near-Field Spectroscopy of Dirac Plasmons in Topological Insulator Bi2Se3

被引：0
|
作者：
Hale, Lucy L. [1 ]
Wang, Zentianye [2 ]
Law, Stephanie [2 ]
Brener, Igal [3 ,4 ]
Mitrofanov, Oleg [1 ]
机构：
[1] UCL, Elect & Elect Engn, London WC1E 7JE, England
[2] Univ Delaware, Dept Mat Sci & Engn, Newark, DE 19716 USA
[3] Sandia Natl Labs, Ctr Integrated Nanotechnol, Albuquerque, NM 87123 USA
[4] Sandia Natl Labs, Albuquerque, NM 87123 USA
来源：
2022 47TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER AND TERAHERTZ WAVES (IRMMW-THZ 2022) | 2022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-THz50927.2022.9895794
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：
We map the dispersion relation in ribbon gratings of topological insulator Bi2Se3 using both far-field and aperture-type near-field THz spectroscopy methods. The results are consistent with theoretical predictions of coupling between the optical phonon and massless Dirac plasmons.
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