Dimensionality of Density Fluctuations and the Excitonic Phase of Electron-Hole Systems in Strong Magnetic Fields
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概要
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Dimensionality of the density fluctuation of electron-hole systems in strong magnetic fields is examined in connection with the possibility of the excitonic phase. Our system consists of one conduction and one valence band. Even in extremely strong fields where only one Landau level of each carrier is taken into consideration and the energy spectrum is purely one-dimensional, the density fluctuations are three-dimensional as far as magnetic field strength is finite. This is due to the motion of carriers which is perpendicular to the field and caused by interactions. Thus the phase transition with the excitonic order parameter may occur at a finite temperature. However, as the field is increased, fluctuations acquire one-dimensional characteristics and critical temperature should be reduced.
- 社団法人日本物理学会の論文
- 1975-12-15
著者
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Fukuyama Hidetoshi
Department Of Applied Physics Faculty Of Science Tokyo University Of Science
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TSUZUKI Toshio
Department of Physics, Tohoku University
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Nakajima Sadao
Institute For Solid State Physics Tokyo University
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Tsuzuki Toshio
Department Of Physics Faculty Of Science Kyushu University
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Nakajima Sadao
Institute For Solid State Physics The University Of Tokyo
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Fukuyama Hidetoshi
Department of Applied Physics and Research Institute for Science and Technology, Tokyo University of Science, Shinjuku, Tokyo 162-8601, Japan
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