Competitive forms of symmetry breaking in linear antiferromagnetic systems

W.J. Caspers, W. Magnus

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    Two different forms of symmetry breaking are considered for linear antiferromagnetic systems (S = 1/2 ). 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.
    Original languageEnglish
    Pages (from-to)155-170
    JournalPhysica A
    Issue number1-2
    Publication statusPublished - 1985


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