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Phys. Rev. E 64, 026123 (2001) [7 pages]

Crossover between ordinary and normal transitions in the presence of a bulk field

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A. Maciołek1, A. Drzewiński2, and A. Ciach1
1Institute of Physical Chemistry, Polish Academy of Sciences, Department III, Kasprzaka 44/52, PL-01-224 Warsaw, Poland
2Institute of Low Temperature and Structure Research, Polish Academy of Sciences, P.O. Box 1410, Wrocław 2, Poland

Received 26 January 2001; published 25 July 2001

We investigate two-dimensional Ising films at the critical temperature Tc and nonzero bulk magnetic field h using the density-matrix renormalization-group method. The crossover beween ordinary (h1=0) and normal (h1=∞) transitions corresponding to finite values of the surface fields h1=h2, is studied. The structure and the solvation force fsolv as a function of h, crucially depend on the value of h1. Scaling functions for fsolv and the longitudinal correlation length are given and discussed.

© 2001 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevE.64.026123
DOI:
10.1103/PhysRevE.64.026123
PACS:
64.60.Fr, 05.50.+q, 68.35.Rh
 
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