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Competitive forms of symmetry breaking in linear antiferromagnetic systems

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  • Caspers, W.J.
  • Magnus, W.

Abstract

Two different forms of symmetry breaking are considered for linear antiferromagnetic systems (S = 12). Their relative stability is examined by considering small fluctuations in the harmonic oscillator approximation. Imaginary frequencies correspond with an unstable phase, and the ground state represents an absolute minimum of the total energy, including contributions from the zero-point fluctuations.

Suggested Citation

  • Caspers, W.J. & Magnus, W., 1985. "Competitive forms of symmetry breaking in linear antiferromagnetic systems," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 130(1), pages 155-170.
    • Handle: RePEc:eee:phsmap:v:130:y:1985:i:1:p:155-170
    DOI: 10.1016/0378-4371(85)90102-5
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    References listed on IDEAS

    as
    1. Magnus, W. & Boon, W., 1984. "A Green function approach to the alternating spin-12 Heisenberg antiferromagnetic linear chain in a magnetic field," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 126(1), pages 177-194.
    2. van den Broek, P.M. & Caspers, W.J. & Willemse, M.W.M., 1980. "Ground-state energies of antiferromagnetic lattices," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 104(1), pages 298-308.
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    1. Caspers, W.J. & Tielen, G.I., 1986. "Rotational ordering and symmetry breaking in the triangular antiferromagnetic Heisenberg lattice," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 135(2), pages 519-532.
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