Singlet Ground States in an Organic S=1/2 Spin Ladder and a Novel Double Spin Chain of Ferromagnetic Dimers Formed by an Organic Tetraradical : Condensed Matter: Electronic Properties, etc.

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概要

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• We have synthesized the novel organic polyradicals BIP-BNO and BIP-TENO, which crystallize to form spin systems with a double spin chain, where BIP-BNO and BIP-TENO denote 3,5'-bis(N-tert-butylaminoxyl)-3',5-dibromobiphenyl and 3,3',5,5'-tetrakis(N-tert-butylaminoxyl)biphenyl, respectively. The crystals of BIP-BNO form a two-leg ladder of S = 1/2 with antiferromagnetic legs and rungs. The ground state of this material is singlet. The BIP-TENO molecule includes S = 1/2 spin pairs (dimers) in which the two spins are coupled ferromagnetically. The BIP-TENO crystals form a double spin chain consisting or dimers. All dimers interact antiferromagnetically with each other. This system can be regarded as an antiferromagnetic two-leg ladder when the dimer is taken as a unit. The ground state of this material is singlet and the existence of excitation gaps is suggested by the temperature dependence of the static magnetic susceptibility.

• 社団法人日本物理学会の論文
• 2000-04-15

著者

• GOTO Tsuneaki

  Institute for Solid State Physics,University of Tokyo

• HOSOKOSHI Yuko

  Department of Material Sciences, Osaka Prefecture University

• Goto Tetsuya

  Plasma Research Center University Of Tsukuba

• Inoue K

  Dept. Of Mechanical And System Engineering Ryukoku Univ.

• Inoue Katsuya

  Institute Of Multidisciplinary Research For Advanced Materials Tohoku University

• Inoue Katsuya

  Institute For Molecular Science And Grad. Univ. Advanced Studies

• Gotoh Takayuki

  Institute For Materials Research Tohoku University

• Katoh Kenichi

  Department Of Physics Faculty Of Science Tohoku University

• KONDO Kenjiro

  National Laboratory for High Energy Physics

• Goto T

  Nagoya Inst. Technol. Nagoya Jpn

• Goto Tsuneaki

  Institute For Solid State Physics The University Of Tokyo

• Goto T

  Univ. Tokyo Tokyo Jpn

• Goto T

  Univ. Tokyo Chiba

• Goto Tsuneaki

  Institute For Solid State Physics University

• KATOH Keiichi

  Institute for Molecular Science

• HOSOKOSHI Yuko

  Institute for Molecular Science

• Hosokoshi Y

  Department Of Material Sciences Osaka Prefecture University

• Hosokoshi Yuko

  Institute For Molecular Science:(present Address)department Of Material Sciences College Of Integrat

• Hosokoshi Yuko

  Department Of Physical Science Osaka Prefecture University

• Katoh K

  National Defense Acad. Kanagawa

• Goto T

  Institute For Solid State Physics The University Of Tokyo

• Goko T

  Institute For Solid State Physics University Of Tokyo

• Katoh Kenichi

  Department Of Applied Physics National Defense Academy

• Goto Tsuneaki

  The Institute Of Solid State Physics Tokyo University

• Kirita Keizo

  Venture Business Laboratory Kobe University:graduate School Of Science And Technology Kobe Universit

• Katoh Keiichi

  Institute For Chemical Research Kyoto University

• Inoue Kazunori

  Department Of Physics Faculty Of Science Ehime University:mitsubichi Electric Co.

• Kobayashi Kei-ichiro

  Mitsubishi Electric Corporation Materials And Electric Devices Laboratory

• Goto T

  新潟大院自然

• Kobayashi Koichi

  Department Of Basic Sciences Ishinomaki Senshu University

• Inoue Katsuya

  Institute For Molecular Science

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