کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
977284 933185 2009 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Percolation properties of the antiferromagnetic Blume-Capel model in the presence of a magnetic field
موضوعات مرتبط
مهندسی و علوم پایه ریاضیات فیزیک ریاضی
پیش نمایش صفحه اول مقاله
Percolation properties of the antiferromagnetic Blume-Capel model in the presence of a magnetic field
چکیده انگلیسی
The problem of order-order and order-disorder transitions in the system described by the 2D antiferromagnetic Blume-Capel model in the presence of a magnetic field is studied by the Wang and Landau flat-histogram simulation method and by the classical Monte Carlo. Anomalous thermodynamic characteristics in low temperatures indicate different type orderings in finite temperatures. The existence of pure antiferromagnetic phases as well as mixed state is shown by detailed phenomenological analysis of the system. The border lines on the phase diagram between various orderings are determined by the complementary microscopic study of the percolation problem for c(2×2) elementary structures of antiferromagnetic ordered phases. This new approach has also shown a full agreement between the percolation threshold for the cluster of mixed phase and the critical temperature of the ordered system.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica A: Statistical Mechanics and its Applications - Volume 388, Issue 7, 1 April 2009, Pages 1111-1119
نویسندگان
,