Physical principles of the amplification of electromagnetic radiation due to negative electron masses in a semiconductor superlattice
journal contributionposted on 2017-08-17, 15:21 authored by Aleksei V. Shorokhov, Nikolai A. Pyataev, Nikolai N. Khvastunov, Timo Hyart, Feodor Kusmartsev, Kirill Alekseev
In a superlattice placed in crossed static electric and magnetic fields, under certain conditions, the inversion of electron population can appear at which the average energy of electrons is above the middle of the mini-band and the effective mass of the electron is negative. This is the implementation of the negative effective mass amplifier and generator (NEMAG) in the superlattice. It can result in the amplification and generation of terahertz radiation even in the absence of negative differential conductivity.
This work was supported by the Ministry of Education and Science of the Russian Federation (project no. 2.2665.2014), by the Engineering and Physical Sciences Research Council (United Kingdom, grant no. EP/I01490X/1), by the Royal Society (United Kingdom–India Collaboration), and, in part, by the Ministry of Education and Science of the Russian Federation (state contract no. 11.519.11.3023).
Published inJETP Letters
Pages766 - 770
CitationSHOROKHOV, A.V., ... et al., 2015. Physical principles of the amplification of electromagnetic radiation due to negative electron masses in a semiconductor superlattice. JETP Letters, 100 (12), pp.766-770.
PublisherSpringer (© Pleiades Publishing)
- AM (Accepted Manuscript)
Publisher statementThis work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/
NotesThe final publication is available at Springer: http://dx.doi.org/10.1134/S002136401424014X. Originally published as: Fizicheskie printsipy usileniya elektromagnitnogo izlucheniya na otricatel'nykh elektronnykh massakh na osnove poluprovodnikovoi sverkhreshetki, Pis'ma v zhurnal eksperimental'noi i teoreticheskoi fiziki, 2014, 100 (12), pp.870-875.