Answers are grounded in this paper and cite their sources.
The semi-infinite Ising model, for S=(1/2) and with an arbitrary number of surface magnetic couplings Jₘₙ different from the bulk J, is solved in the mean-field approximation. Exact expressions for the critical couplings Jₘₙ,C leading to a surface Curie temperature TCS higher than the bulk TC are obtained. The value for TCS in the semi-infinite crystal is obtained by means of a continued-fraction method. The model is applied to explain recent experimental results on the (0001) surface of gadolinium.
No takes yet. Share an insight, caveat, or question.
Aguilera‐Granja et al. (1985) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: