Generation Of Terahertz Radiation In Nanometer Films:Ge/-Sn

Poster (MATL-P5)

Fri, 13 Nov 2020 01:15am to 03:00am

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We observed a strong emission of terahertz radiation, in sandwich nanostructures made of Ge and ÃZ±-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.

Download Abstract: mustafin_trukhin_irmmw_2020.pdf

Presenters and Authors Info

Presenter: Anonymous

Authors: Trukhin, Valerii; Mustafin, Ilia; Gavrilova, Polina; Kusmartsev, Fedor; Kusmartseva, Anna; Zhang, Binglei; Liu, Yang; Luo, Yi

Department of Physics, Loughborough University, Ioffe Institute, Nano Fabrication Laboratory Microsystem and THz Research Center