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Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki, 2004, Volume 80, Issue 2, Pages 134–139
(Mi jetpl2063)
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This article is cited in 5 scientific papers (total in 5 papers)
CONDENSED MATTER
Collective magnetoplasma excitations in two-dimensional electron rings
S. I. Gubareva, V. A. Koval'skiia, D. V. Kulakovskiia, I. V. Kukushkina, M. N. Khannanova, Yu. Smetb, К. фон Клитцингb a Institute of Solid State Physics, Russian Academy of Sciences
b Max-Planck-Institut für Festkörperforschung, 70569
Stuttgart, Germany
Abstract:
The spectra of magnetoplasma excitations in two-dimensional electron disks and rings are studied by optical detection of resonance microwave absorption. For ring-shaped structures, two types of edge magnetoplasma modes localized along the inner and outer boundaries of the ring are observed. It is shown that the interaction between these modes leads to a strong modification of their magnetic-field dependences as compared to disks. In addition to the longitudinal edge magnetoplasma excitations, transverse plasma modes associated with the electron density oscillations along the ring radius are revealed. The spectra of magnetoplasma excitations are calculated in terms of the electrodynamic theory for both ring-shaped and disk-shaped structures. The classification of all modes of collective magnetoplasma excitations observed in the experiment is performed on the basis of the comparison between experimental and theoretical results.
Received: 10.06.2004
Citation:
S. I. Gubarev, V. A. Koval'skii, D. V. Kulakovskii, I. V. Kukushkin, M. N. Khannanov, Yu. Smet, К. фон Клитцинг, “Collective magnetoplasma excitations in two-dimensional electron rings”, Pis'ma v Zh. Èksper. Teoret. Fiz., 80:2 (2004), 134–139; JETP Letters, 80:2 (2004), 124–129
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https://www.mathnet.ru/eng/jetpl2063 https://www.mathnet.ru/eng/jetpl/v80/i2/p134
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Abstract page: | 183 | Full-text PDF : | 67 | References: | 38 |
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