کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8153532 1524765 2018 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Strongly anisotropic RKKY interaction in monolayer black phosphorus
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Strongly anisotropic RKKY interaction in monolayer black phosphorus
چکیده انگلیسی
We theoretically study the Ruderman-Kittel-Kasuya-Yosida (RKKY) interaction in two-dimensional black phosphorus, phosphorene. The RKKY interaction enhances significantly for the low levels of hole doping owing to the nearly valence flat band. Remarkably, for the hole-doped phosphorene, the highest RKKY interaction occurs when two impurities located along the zigzag direction and it tends to a minimum value with changing the direction from the zigzag to the armchair direction. We show that the interaction is highly anisotropic and the magnetic ground-state of two magnetic adatoms can be tuned by changing the rotational configuration of impurities. Owing to the anisotropic band dispersion, the oscillatory behavior with respect to the angle of the rotation and the distance of two magnetic impurities, R is well-described by sin(2kFR), where the Fermi wavelength kF changes in different directions. We also find that the tail of the RKKY oscillations falls off as 1/R2 at large distances.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 456, 15 June 2018, Pages 307-315
نویسندگان
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