Preasymptotic 3D XY Critical Behavior of Heat Capacity at Normal-Incommensurate Phase Transition in K_2ZnCl_4 and K_2SeO_4
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概要
- 論文の詳細を見る
Heat capacity of K_2ZnCl_4 and K_2SeO_4 has been measured using a high-resolution ac calorimeter. Critical behavior of the heat capacity anomalies associated with the normal-incommensurate (N-INC) phase transitions has been analyzed with the preasymptotic renormalization-group expression which includes correction terms up to the second order. It is revealed that the heat capacity anomalies of K_2ZnCl_4 and K_2SeO_4 are described well with the three dimensional (3D) XY model ; the critical exponent, the critical amplitude ratio and the dimensionless ratio derived from the first-order correction terms agree well with the theoretically expected values of 3D XY model. These results are consistent with our previous experimental result for Rb_2ZnCl_4 and the Cowley and Bruce's prediction that the N-INC phase transition is classified into the 3D XY system.
- 社団法人日本物理学会の論文
- 1995-11-15
著者
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HAGA Hisashi
Division of Physics, Graduate School of Science, Hokkaido University
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Haga Hisashi
Department Of Physics Faculty Of Science Hokkaido University
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EMA Kenji
Department of Physics,Faculty of Science,Tokyo Institute of Technology
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Nozaki Ryusuke
Division of Physics, Graduate School of Science, Hokkaido University
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Shiozaki Yoichi
Division of Physics, Graduate School of Science, Hokkaido University
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Nozaki Ryusuke
Division Of Physics Graduate School Of Science Hokkaido University
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Ema K
Graduate School Of Science And Engineering Tokyo Institute Of Technology
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Ema Kenji
Department Of Physics Faculty Of Science Tokyo Institute Of Technology
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Haga Hisashi
Division Of Biological Sciences Graduate School Of Science Hokkaido University
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Shiozaki Y
Hokkaido Univ. Sapporo
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Haga Hisashi
Division Of Biological Sciences Graduate School Of Science
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Ema Kenji
Department of Organic Synthesis, Kyushu University
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