کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5490759 1524781 2017 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Spiral magnetic order, non-uniform states and electron correlations in the conducting transition metal systems
ترجمه فارسی عنوان
نظم مغناطیسی اسپیرال، حالت های غیر یکنواخت و همبستگی الکترونی در سیستم های انتقال فلز هدایت می شود
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
چکیده انگلیسی
The ground-state magnetic phase diagram is calculated within the Hubbard and s-d exchange (Kondo) models for square and simple cubic lattices vs. band filling and interaction parameter. The difference of the results owing to the presence of localized moments in the latter model is discussed. We employ a generalized Hartree-Fock approximation (HFA) to treat commensurate ferromagnetic (FM), antiferromagnetic (AFM), and incommensurate (spiral) magnetic phases. The electron correlations are taken into account within the Hubbard model by using the Kotliar-Ruckenstein slave boson approximation (SBA). The main advantage of this approach is a correct qualitative description of the paramagnetic phase: its energy becomes considerably lower as compared with HFA, and the gain in the energy of magnetic phases is substantially reduced.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 440, 15 October 2017, Pages 66-69
نویسندگان
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