A J Bray 1980 J. Phys. C: Solid State Phys. 13 2361 doi:10.1088/0022-3719/13/12/017
Novel bicritical behaviour in disordered spin-flop antiferromagnets
A J Bray
Show affiliationsThe bicritical point occurring in disordered spin-flop antiferromagnets is novel in two respects: (i) The critical exponents are, to all orders in epsilon =6-d, those of an Ising system in a random ordering field; (ii) In contrast to the pure case, the upper (u) and lower (l) phase boundaries are described by different shift exponents, psi u> psi 1. The upper shift exponent psi u is equal to the crossover exponent phi = gamma (1+ epsilon 2/36+...), where epsilon =6-d and gamma is the staggered susceptibility exponent. The lower shift exponent is unity, to all orders in epsilon .
- PACS
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75.30.Kz Magnetic phase boundaries (including magnetic transitions, metamagnetism, etc.)
- Subjects
- Dates
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Issue 12 (30 April 1980)
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Novel bicritical behaviour in disordered spin-flop antiferromagnets
A J Bray 1980 J. Phys. C: Solid State Phys. 13 2361
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