Ground State of Antiferromagnetic Quantum Spin Systems on the Triangular Lattice
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概要
- 論文の詳細を見る
The spin- 1 /2 antiferromagnetic Heisenberg and X Y models are investigated on thetriangular lattice by numerically diagonalizing finite size systexns (up to 21 spins). Theground state energies of both models are found to be close to other theoretical predic-tions except those of Marland and Betts who performed similar analysis to ours. Wehave numerically constructed a resonating valence bond state of Anderson. It has arelatively large projection on the ground state of the finite Heisenberg model,although the absolute value of the projection decreases linearly with the system size.The trial function proposed by Miyashita for the X Y model does not have an ap-preciable projection on the numerically exact state. We present evidence for theabsence of a sublattice long range order in the Heisenberg model and the existence ofthe same quantity in the X Y model.
- 社団法人日本物理学会の論文
- 1986-01-15
著者
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OGUCHI Takehiko
Department of Physics, Tokyo University of Education
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西森 拓
広島大学理学研究科数理分子生命理学専攻
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西森 拓
大阪府立大学工学研究科
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NISHIMORI Hidetoshi
Department of Physics,Tokyo Institute of Technology
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OGUCHI Tamio
National Research Institute for Metals
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Oguchi Tamio
Department Of Quantum Matter Graduate School Of Advanced Sciences Of Matter (adsm) Hiroshima Univers
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Oguchi T
Hiroshima Univ. Hiroshima
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Oguchi Takehiko
Department Of Physics Tokyo Institute Of Technology
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TAGUCHI Yoshihiro
Department of Physics,Faculty of Science,Tokyo Institute of Technology
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Nishimori Hidetoshi
Department Of Physics Tokyo Institute Of Technology
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Taguchi Y
Department Of Physics Tokyo Institute Of Technology
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Taguchi Yoshihiro
Department Of Applied Chemistry Nagoya Institute Of Technology Gokiso Showa Nagoya 466 Japan
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Nishimori Hidetoshi
Department Of Physics Facuilty Of Science Tokyo Institute Of Technology
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Oguchi Takehiko
Department Of Physics Tokyo Insitute Of Technology:the Technological University Of Nagaoka
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OGUCHI Takehiko
Department of Physics, Tokyo Institute of Technology Oh-okayama
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OGUCHI Takehiko
Department of Physics, Tokyo Institute of Technology : Department of Sciences and Mathematics, The Technological University of Nagaoka
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NISHIMORI Hidetoshi
Department of Physics, Tokyo Institute of Tehchnology
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Taguchi Yoshihiro
Department of Physics,Tokyo Institute of Technology
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Taguchi Yoshihiro
Department of Physics, Tokyo Institute of Technology
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