کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8160808 1525113 2018 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Mean-field theory for multipole ordering in f-electron systems on the basis of a j-j coupling scheme
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Mean-field theory for multipole ordering in f-electron systems on the basis of a j-j coupling scheme
چکیده انگلیسی
We develop a microscopic theory for multipole ordering, applicable to the system with plural numbers of f electrons per ion, from an itinerant picture on the basis of a j-j coupling scheme. For the purpose, by introducing the Γ8 Hubbard Hamiltonian as the minimum model to discuss the multipole ordering in f-electron systems, we describe the mean-field approximation in terms of the multipole operators. For the case of n=2, where n denotes the average f-electron number per ion, we analyze the model on a simple cubic lattice to obtain the multipole phase diagram. In particular, we find the order of non-Kramers Γ3 quadrupoles, O20 and O22, with different ordering vectors. We attempt to explain the phase diagram from the discussion on the interaction energy.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica B: Condensed Matter - Volume 536, 1 May 2018, Pages 6-11
نویسندگان
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