Specific Heat Study of Novel Spin-Gapped System : (CH_3)_2NH_2CuCl_3(Condensed Matter : Electronic Structure, Electrical, Magnetic and Optical Properties)

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概要

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• Specific heat measurements in a magnetic field up to 8T have been performed on an S=1/2 weakly coupled alternating ferromagnetic (F) and antiferromagnetic (AF) dimer chain system, (CH_3)_2NH_2CuCl_3. We have observed a spontaneous AF ordering and a field-induced one below and above the 1/2 magnetization plateau field range from 2 to 3.5T, respectively. The H-T phase boundaries for the orderings are completely different from the general reentrant ones of the other quantum spin systems investigated thus far. In the plateau field range, a double-peaked structure is observed in the temperature dependence of specific heat, reflecting the coexistence of F and AF excitations.

• 社団法人日本物理学会の論文
• 2005-11-15

著者

• 網代 芳民

  京大院理

• AJIRO Yoshitami

  Department of Chemistry, Graduate School of Science, Kyoto University

• 網代 芳民

  Department Of Chemistry Kyoto University:crest Japan Science And Technology Corporation (jst)

• Ajiro Y

  Department Of Chemistry Graduate School Of Science Kyoto University

• 竹田 和義

  Dep. Of Applied Quantum Physics Kyushu Univ. Fukuoka 812-8581 Jpn

• INAGAKI Yuji

  Department of Applied Quantum Physics and Nuclear Engineering Faculty of Engineering, Kyushu Univers

• ASANO Takayuki

  Department of Physics, Kyushu University

• YOSHIDA Yasuo

  Department of Applied Quantum Physics, Kyushu University

• WADA Osamu

  Department of Applied Quantum Physics, Kyushu University

• TAKEO Kenji

  Department of Physics, Kyushu University

• KAWAE Tatsuya

  Department of Applied Quantum Physics, Kyushu University

• TAKEDA Kazuyoshi

  Department of Applied Quantum Physics, Kyushu University

• Ajiro Y

  Department Of Physics Kyushu University

• Wada Osamu

  Department Of Applied Quantum Physics Kyushu University

• Asano T

  Department Of Mechanical Engineering Faculty Of Engineering And Resource Science Akita University

• Inagaki Y

  Department Of Applied Quantum Physics And Nuclear Engineering Faculty Of Engineering Kyushu Universi

• Asano Takayuki

  Depatment Of Applied Physics Fukui University

• Asano Takayuki

  Department Of Physics Faculty Of Science Kyushu University:crest Japan Science And Technology Agency

• Kawae Tatsuya

  Department Of Applied Science Faculty Of Engineering Kyusyu University

• Kawae Tatsuya

  Department Of Applied Quantum Physics Kyushu University

• Ajiro Yoshitami

  Department Of Applied Physics Faculty Of Engineering Fukui University

• Takeda Kazuyuki

  Department Of Chemistry Graduate School Of Science Kyoto University:(present Address)division Of Adv

• Takahashi Keita

  Department Of Applied Science Faculty Of Engineering Kyushu University

• Asano Takayuki

  Department Of Agricultural And Environmental Biology Graduate School Of Agricultural And Life Scienc

• Inagaki Yuji

  Department Of Physics Kyushu University

• Yoshida Yasuo

  Department Of Applied Quantum Physics Kyushu University

• Yoshida Yasuo

  Department Of Applied Quantum Physics Faculty Of Engineering Kyushu University

• Takeda Kazuyoshi

  Department Of Applied Quantum Physics Faculty Of Engineering Kyushu University:institute Of Environm

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