BRAMWELL, ST and HOLDSWORTH, PCW (1994) CAN THE UNIVERSAL JUMP BE OBSERVED IN 2-DIMENSIONAL XY MAGNETS. In: JOURNAL OF APPLIED PHYSICS. (pp. 5955 - 5957). AMER INST PHYSICS
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Abstract
The universal jump in the spin-wave stiffness is a characteristic property of the Kosterlitz-Thouless-Berezinskii phase transition in an infinitely large 2D-XY magnet. It has recently been demonstrated [S. T. Bramwell and P. C. W. Holdsworth, J. Phys. Condens. Matt. 5, L53 (1993)] that finite-size rounding is much more important in two-dimensional than in three-dimensional systems. This is because the properties of the phase transition depend logarithmically, rather than algebraically, on the system size. Consequently, finite-size rounding will be dominant in any real, macroscopic 2D-XY magnet. How the rounded universal jump still exhibits observable universal properties is discussed.
| Type: | Proceedings paper |
|---|---|
| Title: | CAN THE UNIVERSAL JUMP BE OBSERVED IN 2-DIMENSIONAL XY MAGNETS |
| Event: | 38th Annual Conference on Magnetism and Magnetic Materials (MMM 93) |
| Location: | MINNEAPOLIS, MN |
| Dates: | 1993-11-15 - 1993-11-18 |
| Keywords: | KOSTERLITZ-THOULESS TRANSITION, SUPERFLUID DENSITY, NEUTRON-SCATTERING, MODEL, PLANE, RENORMALIZATION, MAGNETIZATION, FERROMAGNET, TEMPERATURE, DEPENDENCE |
| UCL classification: | UCL > School of BEAMS > Faculty of Maths and Physical Sciences > Physics and Astronomy |
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