Low Temperature Thermal and Magnetic Properties of Cu-Doped Haldane Gap Antiferromagnet NENP.

• Kobayashi Tatsuo C.

  Department of Material Physics, Faculty of Engineering Science, Osaka University, Toyonaka 560

• Honda Hajime

  Department of Material Physics, Faculty of Engineering Science, Osaka University, Toyonaka 560

• Koda Akihiro

  Department of Material Physics, Faculty of Engineering Science, Osaka University, Toyonaka 560

• Amaya Kiichi

  Department of Material Physics, Faculty of Engineering Science, Osaka University, Toyonaka 560

書誌事項

タイトル別名

• Low Temperature Thermal and Magnetic Pr

抄録

Effects of Cu-impurity are studied by heat capacity and susceptibility measurements down to 30, mK on the Haldane-gap antiferromagnet Ni(C₂H₈N₂)₂NO₂(ClO₄) (NENP). We have observed the characteristic heat capacity and susceptibility which show contributions from free spins of the Cu²⁺-impurities with S=1/2 and the fractional spin S=1/2 states at the ends of the Ni²⁺(S=1)-chain adjacent to the Cu²⁺-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.

収録刊行物

• Ｊｏｕｒｎａｌ　ｏｆ　ｔｈｅ　Ｐｈｙｓｉｃａｌ　Ｓｏｃｉｅｔｙ　ｏｆ　Ｊａｐａｎ

  Ｊｏｕｒｎａｌ　ｏｆ　ｔｈｅ　Ｐｈｙｓｉｃａｌ　Ｓｏｃｉｅｔｙ　ｏｆ　Ｊａｐａｎ 64 (7), 2609-2613, 1995

  一般社団法人 日本物理学会

キーワード

• heat capacity
• susceptibility
• Haldane gap
• Cu-impurity
• low temperature
• NENP

詳細情報

• CRID: 1390282679157835392
• NII論文ID: 110001957125
• NII論文ID: 210000098788
• NII書誌ID: AA00704814
• DOI: 10.1143/jpsj.64.2609
• BIBCODE: 1995JPSJ...64.2609K
• ISSN: 13474073
• ISSN: 00319015
• NDL書誌ID: 3623552
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I3623552
• Web Site: http://journals.jps.jp/doi/pdf/10.1143/JPSJ.64.2609
• 本文言語コード: en
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