Sampling the two-dimensional density of states g(E,M) of a giant magnetic molecule using the Wang-Landau method

Details Sampling the two-dimensional density of states g(E,M) of a giant magnetic molecule using the Wang-Landau method Sampling the two-dimensional density of states g(E,M) of a giant magnetic molecule using the Wang-Landau method

2006-12-13

arxiv.org/abs/cond-mat/0612320v1

Phys. Rev. B 75 (2007) 054403

Physics

Condensed Matter

Statistical Mechanics

5 pages, 9 figures, submitted to Phys. Rev. B

Scientific paper

10.1103/PhysRevB.75.054403

The Wang-Landau method is used to study the magnetic properties of the giant paramagnetic molecule Mo_72Fe_30 in which 30 Fe3+ ions are coupled via antiferromagnetic exchange. The two-dimensional density of states g(E,M) in energy and magnetization space is calculated using a self-adaptive version of the Wang-Landau method. From g(E,M) the magnetization and magnetic susceptibility can be calculated for any temperature and external field.

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