Antiferromagnetic Triangular Ising Model with Ferromagnetic Next Nearest Neighbor Interactions : Transfer Matrix Method

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概要

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• An antiferromagnetic triangular Ising model with ferromagnetic next nearestneighbor interactions is studied by means of a transfer matrix method and a finite sizescaling. Using the Roomany-Wyld approximation, it cannot be concluded definitelywhether the system has only one critical point or not. By studying decays of the correlation functions of each sublattice, it is found that there is a finite temperatureregion where the correlation functions of each sublattice show a power law decay,namely, in this region every temperature is a critical temperature. The results bymeans of the present transfer matrix method are in good agreement with that byMonte Carlo methods, namely, the discrepancy between both results, reported recently, can be got rid of.[Ising Model, antiferromagnetic triangular lattice, transfer matrix method, ll Roomany-Wyld approximation, correlation lengthl

• 社団法人日本物理学会の論文
• 1988-04-15

著者

• OGUCHI Tamio

  National Research Institute for Metals

• Oguchi Tamio

  Department Of Quantum Matter Graduate School Of Advanced Sciences Of Matter (adsm) Hiroshima Univers

• Oguchi T

  Hiroshima Univ. Hiroshima

• Oguchi Takehiko

  Department Of Physics Tokyo Institute Of Technology

• Kitatani H

  Nagaoka Univ. Technol. Nagaoka

• Kitatani Hidetsugu

  Department Of Electrical Engineering Nagaoka University Of Technology

• Oguchi Takehiko

  Department Of Physics Tokyo Insitute Of Technology:the Technological University Of Nagaoka

• OGUCHI Takehiko

  Department of Physics, Tokyo Institute of Technology Oh-okayama

• OGUCHI Takehiko

  Department of Physics, Tokyo Institute of Technology : Department of Sciences and Mathematics, The Technological University of Nagaoka

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