کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10710231 1024659 2005 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Frustration effects in magnetic molecules
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Frustration effects in magnetic molecules
چکیده انگلیسی
By means of exact diagonalization we study the ground-state and the low-temperature physics of the Heisenberg antiferromagnet on the cuboctahedron and the icosidodecahedron. Both are frustrated magnetic polytopes and correspond to the arrangement of magnetic atoms in the magnetic molecules Cu12La8 and Mo72Fe30. The interplay of strong quantum fluctuations and frustration influences the ground state spin correlations drastically and leads to an interesting magnetization process at low temperatures. Furthermore, the frustration yields low-lying non-magnetic excitations resulting in an extra low-temperature peak in the specific heat.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 295, Issue 2, August 2005, Pages 164-167
نویسندگان
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