Extension of the Method of Exact Diagonalization of Quantum Spin Models to Finite Face Centred Cubic Lattices and Estimation of the T=0 Properties of the S=1/2 XY Ferromagnet on the Infinite fcc Lattice

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概要

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• First we introduce the upper' triangular lattice f'orm method that permits one to derive easilythe cornplete set of' finite lattices of any given ntnmber, N , of vertices for any regular infinitelattice in any nunaber of dimensions, and we use it to obtain all finite fcc lattices of' N< 28. Wecompute the ground state energy, magnetization and spin-spin correlations of the spin one-halfXY ferromagnet on each of these lattices. Extrapolation of these data to infinite N yields T = Oestimates of the properties rnentioned. Our estiraaates agree to a few tenths of a percent withspin wave, series expansion and variational estimates.

• 社団法人日本物理学会の論文
• 1997-10-15

著者

• D. Betts

  Department Of Physics Dalhousie University

• Betts Donald

  Department Of Physics Dalhousie University

• E. STEWART

  Pulp and Paper Centre,University of British

• S. FLYNN

  Department of Physics,Dalhousie University

• S. Flynn

  Department Of Physics Dalhousie University

• Flynn James

  Department Of Physics Dalhousie University

• E. Stewart

  Pulp And Paper Centre University Of British

• Stewart Gregory

  Pulp And Paper Centre University Of British Columbia

関連論文

• On Long Range Chiral Order of the s=1/2 XY and Heisenberg Antiferromagnets on the Triangular Lattice
• High Temperature Series Expansion of the Fluctuation of the Vector Chirality for the Spin-1/2 XY Antiferromagnet on the Triangular Lattice
• Extension of the Method of Exact Diagonalization of Quantum Spin Models to Finite Face Centred Cubic Lattices and Estimation of the T=0 Properties of the S=1/2 XY Ferromagnet on the Infinite fcc Lattice

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