Low Temperature Thermal and Magnetic Properties of Cu-Doped Haldane Gap Antiferromagnet NENP
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概要
- 論文の詳細を見る
Effects of Cu-impurity are studied by heat capacity and susceptibility measurements down to 30 mK on the Haldane-gap antiferromagnet Ni(C_2H_8N_2)_2NO_2(ClO_4) (NENP). We have observed the characteristic heat capacity and susceptibility which show contributions from free spins of the Cu^<2+>-impurities with S=1/2 and the fractional spin S= 1/2 states at the ends of the Ni^<2+> (S=1)-chain adjacent to the Cu^<2+>-impurities. The present results are explained completely by the phenomenological Hamiltonian for a trimmer of S=1/2 proposed by the ESR study on this system.
- 社団法人日本物理学会の論文
- 1995-07-15
著者
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Amaya Kiichi
Department of Material Physics, Faculty of Engineering Science, Osaka University
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Honda Hajime
Department of Bioengineering, Nagaoka University of Technology
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Honda Hajime
Department Of Bio Engineering Nagaoka University Of Technology
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Koda Akihiro
Department Of Physical Science Graduate School Of Engineering Science Osaka University:research Cent
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Koda Akihiro
Department Of Material Physics Faculty Of Engineering Science Osaka University
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Amaya Kiichi
Department Of Material Physics Faculty Of Engineering Science
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Kobayashi C.
Department of Material Physics, Faculty of Engineering Science, Osaka University
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Honda H
Department Of Material Physics Faculty Of Engineering Science Osaka University
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Kobayashi C.
Department Of Material Physics Faculty Of Engineering Science Osaka University
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Kobayashi Tatsuo
Departmant Of Physics Kyoto University
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