Finite Temperature Properties of Mixed Diamond Chain with Spins 1 and 1/2

• Hida Kazuo

  Division of Material Science, Graduate School of Science and Engineering, Saitama University

• Takano Ken’ichi

  Toyota Technological Institute

• Suzuki Hidenori

  Toyota Technological Institute

抄録

We formulate statistical mechanics for a mixed diamond chain with spins 1 and 1/2. Owing to a series of conservation laws, any eigenstate of this system is decomposed into eigenstates of finite odd-length spin-1 chains. The ground state undergoes five quantum phase transitions with varying λ, a parameter that controls frustration. We evaluated the residual entropy and Curie constant which characterize each phase and phase boundary at low temperatures. We further find various characteristic finite-temperature properties such as the nonmonotonic temperature dependence of magnetic susceptibility, the multipeak structure in the λ-dependence of entropy, the plateau-like temperature dependence of entropy and the multipeak structure of specific heat.

収録刊行物

• Ｊｏｕｒｎａｌ　ｏｆ　ｔｈｅ　Ｐｈｙｓｉｃａｌ　Ｓｏｃｉｅｔｙ　ｏｆ　Ｊａｐａｎ

  Ｊｏｕｒｎａｌ　ｏｆ　ｔｈｅ　Ｐｈｙｓｉｃａｌ　Ｓｏｃｉｅｔｙ　ｏｆ　Ｊａｐａｎ 78 (8), 084716-084716, 2009

  一般社団法人 日本物理学会

キーワード

• mixed spin chain
• diamond chain
• frustration
• thermodynamics
• residual entropy
• exact solution

詳細情報

• CRID: 1390282679173883904
• NII論文ID: 130005437792
• NII論文ID: 210000107943
• NII論文ID: 40016692867
• NII書誌ID: AA00704814
• DOI: 10.1143/jpsj.78.084716
• ISSN: 13474073
• ISSN: 00319015
• NDL書誌ID: 10317442
• Web Site: http://id.ndl.go.jp/bib/10317442
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I10317442
• Web Site: https://journals.jps.jp/doi/pdf/10.1143/JPSJ.78.084716
• 本文言語コード: en
• データソース種別:
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