Quantum Phase Transitions in Two-Dimensional Spin Systems with Ladder,Plaquette and Mixed-Spin Structures
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概要
- 論文の詳細を見る
Quantuzn phase transitions between the magnetically ordered and disordered st?ries are sttudled for the two-ditaaensional antiferronaagnetic qtranttrzm spin systetaas with ladder, plaqtrette,and rnixed-spin structtnres. Starting witla properly chosen singlet-clt.rster configtrrations, we per-form the series expansion for the staggered magnetic stnsceptibility. The phase botrndary isdetermined by applying the Dlog and bi?tsed Pade approxim?tnts to the staggered strsceptibilit.ythus obtained. The resulting phase diagram allows JIS to cliscuss th<e qvranttxrn phase transitionsquantitatively, which agrees fairly well xvith the qtrantttrn klonte Carlo restrlts for several cursespreviously studied.
- 社団法人日本物理学会の論文
- 1999-07-15
著者
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KOGA Akihisa
Department of Applied Physics, Osaka University
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Koga Akihisa
Department Of Applied Physics Osaka University
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KAWAKAMI Norio
Department of Applied Physics, Osaka University
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Kawakami Norio
Department Of Applied Physics Osaka University
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Koga A
Department Of Physics Kyoto University
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KUMADA Seiya
Department of Applied Physics,Osaka University
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Kumada S
Department Of Applied Physics Osaka University
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Kumada Seiya
Department Of Applied Physics Osaka University
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Koga Akihisa
Department of Physics, Kyoto University
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