کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1591281 1515573 2016 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Electronic and magnetic properties of germanene: Surface functionalization and strain effects
ترجمه فارسی عنوان
خواص الکترونیک و مغناطیسی آلمان: کارکردن سطح و اثرات کشش
کلمات کلیدی
آلمانی گمشده، فاصله باند، اموال مغناطیسی، تئوری کاربردی تراکم،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
چکیده انگلیسی
The surface functionalization and strain effects on the structural, electronic, and magnetic properties of full-/half-passivated germanenes are investigated systematically by the first-principle calculations within density functional theory. It is found that the germanenes with full-passivation have different band structures. i.e., the band-gap of GeH is larger than that of GeF and GeCl. Interestingly, when surface passivation and strain are utilized, germanenes go through a transformation from semiconductor to semi-metal. Moreover, germanenes with half-passivation present different magnetic characters, i.e,. Ge2H is a ferromagnetic semiconductor, while Ge2F and Ge2Cl are anti-ferromagnetic semiconductors. The stability of magnetic coupling of Ge2Xs can be modulated by external strain. Our calculations indicate that the electronic and magnetic properties of passivated-germanenes strongly depend on their surface functionalization and strain effects.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid State Communications - Volume 226, January 2016, Pages 19-24
نویسندگان
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