A New Phenomenon is Sound Attenuation in Bismuth under Very Strong Magnetic Fields
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概要
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A new phenomenon in sound attenuation in bismuth has been observed at liquid helium temperatures and under very strong magnetic-field conditions such that the electrons and holes in the states with the Landau quantum number n=1 almost simultaneously satisfy resonance when varing the field strength in some suitable field directions. The anomalous part of the attenuation at the resonance field position, Δα, obeys the law Δα=A(T/T_c-1)^<-(0.49±0.06)> in a limited region of reduced temperature (T/T_c-1). The values of the parameters T(≲1.6K) and A depend characteristically on the difference between the resonance field strengths for the electrons and holes. The experimental facts suggest that this phenomenon may be related to the fluctuation of electron-hole pairs produced above the excitonic phase transition temperature.
- 社団法人日本物理学会の論文
- 1971-09-05
著者
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MASE Shoichi
Department of Physics, Kyushu University
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Mase Shoichi
Department Of General Education Aichi Institute Of Technology
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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 Physics, Kyushu University
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SAKAI TAKESHI
Department of Chemical Engineering, Gunma University
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