کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1591328 1515571 2016 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The role of intra- and inter-site exchange correlations in the extended Falicov-Kimball model on a triangular lattice
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
The role of intra- and inter-site exchange correlations in the extended Falicov-Kimball model on a triangular lattice
چکیده انگلیسی
Ground state magnetic properties of the spin-dependent Falicov-Kimball model (FKM) are studied by incorporating the intrasite exchange correlation J (between itinerant d- and localized f-electrons) and intersite (superexchange) correlation Jse (between localized f-electrons) on a triangular lattice for two different fillings. Numerical diagonalization and Monte-Carlo techniques are used to determine the ground state magnetic properties. Transitions from antiferromagnetic to ferromagnetic and again to re-entrant antiferromagnetic phase is observed in a wide range of parameter space. The magnetic moments of d- and f-electrons are observed to depend strongly on the value of J, Jse and also on the total number of d-electrons (Nd).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid State Communications - Volume 228, February 2016, Pages 1-5
نویسندگان
, , , ,