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Nucleation in Ising ferromagnet by a field spatially spreading in time
Acharyya, Muktish - In: Physica A: Statistical Mechanics and its Applications 403 (2014) C, pp. 94-99
The nucleation in Ising ferromagnet has been studied by Monte Carlo simulation. Here, unlike the earlier studies, the … magnetic field is spreading over the space in time. The nucleation time is observed to increase as compared to that in the case … magnetisation is studied with temperature and the strength of spreading magnetic field. The ratio of nucleation time and effective …
Persistent link: https://www.econbiz.de/10010872661
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Ferromagnetic phase transition in Barabási–Albert networks
Aleksiejuk, Agata; Hołyst, Janusz A.; Stauffer, Dietrich - In: Physica A: Statistical Mechanics and its Applications 310 (2002) 1, pp. 260-266
Ising spins put onto a Barabási–Albert scale-free network show an effective phase transition from ferromagnetism to paramagnetism upon heating, with an effective critical temperature increasing as the logarithm of the system size. Starting with all spins up and upon equilibration pinning the...
Persistent link: https://www.econbiz.de/10011060678