Physics – Condensed Matter – Disordered Systems and Neural Networks
Scientific paper
2006-11-30
Problems in Atomic Science and Technology, Ser. Nuclear Physics, No 3(2) (2007) 372-375
Physics
Condensed Matter
Disordered Systems and Neural Networks
4 pages, submitted to the proceedings of the 2nd International Conference on Quantum Electrodynamics and Statistical Physics (
Scientific paper
In this Monte Carlo study we concentrated on the influence of non-magnetic impurities arranged as the lines with random orientation on paramagnetic-to-ferromagnetic phase transition in the 3D Ising model. Special emphasize is given to the long-distance decay of the impurity-impurity pair correlation function. It is shown that for the lattice sizes considered (L=10-96) and for the two different impurity distributions (purely random and mutually avoiding lines) the function is governed by the power law of 1/r^a with an universal exponent a \simeq 2. This result supports our findings about the numerical values of the critical exponents governing magnetic phase transition in the 3D Ising model with long-range-correlated disorder.
Berche Bertrand
Holovatch Yu.
Ilnytskyi Ja.
Ivaneyko Dmytro
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