posted on 2017-08-17, 15:21authored byAleksei 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.
Funding
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).
History
School
Science
Department
Physics
Published in
JETP Letters
Volume
100
Issue
12
Pages
766 - 770
Citation
SHOROKHOV, 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.
This 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/
Publication date
2015
Notes
The 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.