Further Study of the Occurrence of the Excitonic Phase Transition in Bismuth under Strong Magnetic Fields by Ultrasonic Attenuation
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概要
- 論文の詳細を見る
A previous measurement of the anomalous temperature dependence of the giant quantum attenuation of longitudinal sound waves in bismuth under strong magnetic fields was extended down to 1.06K, and further evidence for the occurrence of the excitonic phase transition was obtained. The plot of sound attenuation versus temperature in the anomalous case showed a roundish convex curve near a maximum located at a point a little below T_c, a temperature parameter to be identified with the phase transition point. This temperature dependence of the attenuation is well explained in terms of the critical fluctuation and a modified form of Maki-Nakanishi's formula of the attenuation of the excitonic state in the absence of field. The transition temperature, the critical exponent and other parameters to specify the anomalous attenuation curve near T_c are evaluated for several cases of a parameter related to the energy difference between the hole and electron Landau levels in the normal state.
- 社団法人日本物理学会の論文
- 1973-10-05
著者
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GOTO Nobuyuki
Department of Hospital Pharmacy, Fukui Medical University
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SAKAI Takeshi
Department of Physics and Research Center for the Early Universe, The University of Tokyo
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Goto Nobuyuki
Department Of Physics Kyushu University
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MASE Shoichi
Department of Physics, Kyushu University
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Goto Nobuyuki
Department Of Hospital Pharmacy Fukui Medical University
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Mase Shoichi
Department Of General Education Aichi Institute Of Technology
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Sakai Takeshi
Department Of Physics Kyushu University
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Sakai Takeshi
Department Of Electrical Engineering College Of Engineering University Of Osaka Prefecture
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SAKAI TAKESHI
Department of Chemical Engineering, Gunma University
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Goto Nobuyuki
Department of Drug Informatics, Faculty of Pharmacy, Meijo University
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