Electronic Spectrum of Complex One-Dimensional Superlattices (based on semiconductor heterostructures in the Al/Ga/As system)
Dragunov I.E.
1, Pilipenko E.A.
1, Semeniuk J. A.
1, Lyubchanskii I.L.
1,21Galkin Donetsk Institute for Physics and Engineering, Donetsk, Russia
2Donetsk State University, Donetsk, DPR, Russia
Email: i_dragun60@mail.ru, pilipenko.katerina@mail.ru, julisemenuk@yandex.ru, igorl@donfti.ru
A one-dimensional superlattice with a complex unit cell consisting of two potential wells and two barriers with different widths and heights is studied within the Kronig-Penney model. A dispersion equation for such a structure is obtained. A numerical analysis of this equation is carried out and the behavior of the electron spectrum of the superlattice GaAs/Al0.5Ga0.5As/GaAs/AlxGa1-xAs is investigated depending on the ratio of the wells and barriers widths, as well as barriers heights Keywords: superlattice, Kronig-Penney model, potential well, potential barrier, band structure.
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