On the Anomalous Sound Attenuation above the Lambda Point in Ammonium Halides
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概要
- 論文の詳細を見る
The sound propagation anomalies due to the critical fluctuations of the orderparameter above the lambda point in ammonium l'nalides are studied theoretically,regarding them as the pseudospin-phonon coupled system. The dependence onthe propagation direction and polarization is investigated by dividing the phasetransition mechanism into two cases ; the direct coupling case and the indirect one.It is shown that, in addition to the ordinary longitudinal sound anomaly of alldirections in both cases, the Izttter can show the c' shear W8N/C anomaly.
- 社団法人日本物理学会の論文
- 1978-04-15
著者
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MATSUSHITA Mitsugu
Research Institute of Electrical Communication,Tohoku University
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Matsushita Mitsugu
Research Institute Of Electrical Communication Tohoku University
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Matsushita Mitsugu
Research Institute Electrical Communication Tohoku University
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