Classical Edge Magnetoplasmon in a GaAs/AlGaAs Two-Dimensional Electron System
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概要
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We have studied the edge magnetoplasmon (EMP) in a GaAs / AlGaAs two-dimensional electron gas (2DEG) system under conditions where the quantum Hall effect (QHE) is not observed ; we call this a classical EMP. The classical EMP's are excited in a 2DEG disk by radio frequency electric field excitation (≤1 GHz) in a high magnetic field B (≤5 T) with the 2DEG sheet carrier density n_s between 2×10^<15>m^<-2> and 1×10^<16>m^<-2>. The resonant frequency is found to be almost proportional to n_s and inversely proportional to B, which agrees quantitatively with the theory proposed by Volkov and Mikhailov, Sov. Phys. -JETP 67 (1988) 1639 by assuming the effective dielectric constant ε=(1+ε_<GaAs>)/2 where ε_<GaAs> is appropriate to the GaAs. A comparison of the experimental results with the calculations revealed that the electron mobility plays an important role in the definition of the EMP frequency.
- 社団法人日本物理学会の論文
- 1994-12-15
著者
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MIYASATO Tatsuro
Department of Computer Science and Electronics, Kyushu Institute of Technology
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TONOUCHI Masayoshi
Department of Computer Science and Electronics, Kyushu Institute of Technology
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Tonouchi Masayoshi
Department Of Computer Science And Electronics Kyushu Institute Of Technology
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Hawker P.
Department of Physics, University of Nottingham
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Cheng S.
Department of Physics, University of Nottingham
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Rampton W.
Department of Physics, University of Nottingham
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Rampton W.
Department Of Physics University Of Nottingham
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Miyasato T
Department Of Computer Science And Electronics Kyushu Institute Of Technology
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Miyasato Tatsuro
Department Of Computer Science And Electronics Kyushu Institute Of Technology
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Cheng S.
Department Of Electronic Engineering National Chiao Tung University
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Miyasato Tatsuro
Department of Applied Science for Integrated System Engineering, Graduate School of Engineering, Kyushu Institute of Technology
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