Generation of terahertz radiation in nanometer films:Ge/α-Sn

V. N. Trukhin, I. A. Mustafin, P. G. Gavrilova, F. V. Kusmartsev, A. Kusmartseva, Y. Liu, B. Zhang, Y. Luo

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

We observed a strong emission of terahertz radiation, in sandwich nanostructures made of Ge and α-Sn nanometer thick films. Together with the THz emission there arise photocurrent, induced by an irradiation of the structures with ultra-short optical pulses. There a strong generation of photon-drag currents of nonequilibrium Dirac (and/or Weil) electrons has been detected. This result and other discovered novel unique properties of the Ge/Sn multi-layers are indicating on an emergence of a new class of topological materials, where massless electrons have a strong interaction with the irradiated light.

Original languageBritish English
Title of host publication2020 45th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2020
PublisherIEEE Computer Society
Pages915
Number of pages1
ISBN (Electronic)9781728166209
DOIs
StatePublished - 8 Nov 2020
Event45th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2020 - Virtual, Buffalo, United States
Duration: 8 Nov 202013 Nov 2020

Publication series

NameInternational Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz
Volume2020-November
ISSN (Print)2162-2027
ISSN (Electronic)2162-2035

Conference

Conference45th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2020
Country/TerritoryUnited States
CityVirtual, Buffalo
Period8/11/2013/11/20

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