کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8161150 1525114 2018 16 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Density functional theory calculation of monolayer WTe2 transition metal dichalcogenides doped with H, Li and Be
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Density functional theory calculation of monolayer WTe2 transition metal dichalcogenides doped with H, Li and Be
چکیده انگلیسی
Results based on density functional theory modelling of electronic and structural properties of single layer WTe2 dichalcogenides doped with X (X=H, Li and Be) were presented. The generalized gradient approximation functional of Perdew, Burke, and Ernzerhof exchange correlation was used for all calculations. Formation energies of X dopant substituted for W (XW) were obtained to be between 3.59 and 2.61 eV. The LiW defect with energy of formation of 2.14 eV was energetically the most favourable. For all dopants considered, while the HW induced no magnetic moment, the LiW and BeW induced magnetic moments of 3.44 and 0.05 μB, respectively. The band gap of the WTe2 as a result of the dopants was populated with several orbital ground states, and thus reduced within a few eV. While all XW behave as p− type dopant, the LiW defect posses half metallic character.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica B: Condensed Matter - Volume 535, 15 April 2018, Pages 167-170
نویسندگان
, , ,