کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8153879 | 1524769 | 2018 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Phase transitions of the frustrated bilayer spin one XY model
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Phase transitions of the frustrated bilayer spin one XY model Phase transitions of the frustrated bilayer spin one XY model](/preview/png/8153879.png)
چکیده انگلیسی
In this paper we use the SU(3) Schwinger boson representation, followed by a mean field decoupling, to study the disordered phases of the bilayer spin one quantum XY antiferromagnet on a square lattice with next near neighbor and a single ion anisotropy. The phase diagram at zero temperature is obtained. The ratio η=Jâ¥/J1 between the interlayer J⥠to the intralayer near neighbor J1 exchange interactions exhibits a quantum phase transition at a critical ratio ηc=21.725 that separates the small- η Nèel phase from the large η quantum disordered paramagnet. The effect of next near neighbor interactions is discussed. The Neel phase is studied using a self consistent harmonic approximation that takes into account topological effects.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 452, 15 April 2018, Pages 315-320
Journal: Journal of Magnetism and Magnetic Materials - Volume 452, 15 April 2018, Pages 315-320
نویسندگان
A.S.T. Pires,