ISSN:
1089-7550
Source:
AIP Digital Archive
Topics:
Physics
Notes:
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 of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.355524
