Plasma oscillations in two-dimensional semiconductor superstructures
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The possibility of plasma oscillations occurring in a two-dimensional electron gas with a superstructure was studied taking into account the Umklapp processes. In the case of high temperatures ( where Δ is the width of the conduction miniband and T is temperature expressed in energy units), the dispersion relation ω(k) was obtained. It is shown that, for small values of , the plasmon spectrum features the characteristic dispersion ω2 ∼ k, which corresponds to a two-dimensional electron gas without a superstructure. For arbitrary values of k, the spectrum is periodic with a period of 2π/d. Numerical estimation of the characteristic frequency of the plasma oscillations for the two-dimensional superstructures currently under experimental investigation yields 1013 s−1.
KeywordsExperimental Investigation Dispersion Relation Magnetic Material Characteristic Frequency Electromagnetism
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- 3.G. M. Gusev, Z. D. Kven, V. B. Besman, et al., Fiz. Tekh. Poluprovodn. (St. Petersburg) 26, 539 (1992) [Sov. Phys. Semicond. 26, 304 (1992)].Google Scholar
- 4.D. Ferry, L. Akers, and E. Greeneich, Ultra Large Scale Integrated Microelectronics (Prentice-Hall, Englewood Cliffs, 1988; Mir, Moscow. 1991).Google Scholar
- 5.S. V. Kryuchkov and A. I. Shapovalov, Fiz. Tverd. Tela (St. Petersburg) 39, 1470 (1997) [Phys. Solid State 39, 1305 (1997)].Google Scholar
- 8.N. N. Zinov’ev, D. I. Kovalev, I. D. Yaroshetskii, and A. Yu. Blank, Pis’ma Zh. Éksp. Teor. Fiz. 53, 147 (1991) [JETP Lett. 53, 154 (1991)].Google Scholar
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