Abstract:
The influence of surface defects on the critical properties of magnetic films is studied for Ising models with nearest-neighbour ferromagnetic couplings. The defects include one or two adjacent lines of additional atoms and a step on the surface. For the calculations, both density-matrix renormalization group and Monte Carlo techniques are used. By changing the local couplings at the defects and the film thickness, non-universal features as well as interesting crossover phenomena in the magnetic exponents are observed.
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Received 27 July 2000 and Received in final form 5 October 2000
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Chung, MC., Kaulke, M., Peschel, I. et al. Ising films with surface defects. Eur. Phys. J. B 18, 655–661 (2000). https://doi.org/10.1007/s100510070014
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DOI: https://doi.org/10.1007/s100510070014