High-Field Magnetization Processes of Double Spin Chain Systems KCuCl_3 and TlCuCl_3

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概要

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• High-field magnetization processes of Sol/2 double spin chain systems KCtuCl3 and TlCuCl3have been tneasured Lip to 39T at 4.2 and l.7K for both systems and at 1.0 and O.5K forTlCuCl3 using single crystals. A transition fro?n a singlet grotund state with an excitation gapto a gapless rauagnetic state with finite strsceptibility occurs at H. '? 20T and 6T for KCuCl3and TlCuCl3, respectively. The critical field H. depends on the external field direction due tothe anisotropy of the y-factor. The excitation gap A is evaltrated as 4/AB : 3l.1K for KCuC13and 7.5K for TlCL1Cl3, Although the antiferromagnetic interactions in TlCuCl3 are strongerthan those in KCuCl3, which can be seen frona the slope of' the tnagnetization curves above H.,the excitation gap in TlCuCl3 is about a qtuarter of' that of KCuCl3. It is observed that thetransition field H. increases with increasing temperattrre.

• 社団法人日本物理学会の論文
• 1997-07-15

著者

• TANAKA Hidekazu

  Department of Natural History Sciences, Faculty of Science, Hokkaido University

• KAMISHIMA Kenji

  Institute for Solid State Physics,University of Tokyo

• GOTO Tsuneaki

  Institute for Solid State Physics,University of Tokyo

• MITAMURA Hiroyuki

  Institute for Solid State Physics, University of Tokyo

• Gotoh Takayuki

  Institute For Materials Research Tohoku University

• Kato T

  Fukuoka Institute Of Technology

• Mitamura H

  Institute For Solid State Physics The University Of Tokyo

• SHIRAMURA Wakako

  Department of Physics,Sophia University

• TAKATSU Ken-ichi

  Department of Physics,Tohoku Institute for Technology

• Takahashi Mitsue

  Institute for Solid State Physics,University of Tokyo

• Goto Tsuneaki

  Institute For Solid State Physics The University Of Tokyo

• Goto T

  Univ. Tokyo Chiba

• Goto Tsuneaki

  Institute For Solid State Physics University

• Mitamura Hiroyuki

  Institute For Solid State Physics (issp) University Of Tokyo

• Shiramura Wakako

  Department Of Physics Faculty Of Science And Technology Sophia University

• KATO Tetsuya

  Faculty of Education, Chiba University

• Takahashi Mitsue

  Institute For Solid State Physics University Of Tokyo

• Kamishima Kenji

  Institute For Solid State Physics University Of Tokyo

• Goto T

  Institute For Solid State Physics The University Of Tokyo

• Mitamura H

  Institute For Solid State Physics University Of Tokyo

• Goto Tsuneaki

  The Institute Of Solid State Physics Tokyo University

• Kato T

  Faculty Of Education Chiba University

• Tanaka Hidekazu

  Department Of Internal Medicine Iii Osaka Medical College

• Tanaka Hidekazu

  Department Of Earth And Planetary Sciences Faculty Of Science Tokyo Institute Of Technology

• Tanaka Hidekazu

  Department Of Chemistry And Chemical Biology Gunma University

• MITAMURA Hiroyuki

  Institute for Solid State Physics, The University

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