کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5488842 1399586 2017 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Topological confinement effect of edge potentials in zigzag-edge graphene nanoribbons under a staggered bulk potential
ترجمه فارسی عنوان
اثر کانال های توپولوژیکی پتانسیل لبه در نانوروبن های گرافن گرافیت لبه های زیر زنجیره ای تحت یک پتانسیل پراکنده
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
چکیده انگلیسی
We have investigated topological confinement effects of edge potentials on gapless edge states in zigzag-edge graphene nanoribbons (ZGNRs) under a staggered bulk potential. A variety of gapless edge states were predicted with the concept of topological confinement effect alone, which was confirmed by using tight-binding model calculations. Half-metallicity of ZGNR, which has been semiclassically described, was revealed to fundamentally result from a topological confinement effect. Edge potentials were found to allow an infinitesimal staggered bulk potential to result in gapless edge states, regardless of the ribbon width. A uniform or staggered potential applied to the boundary region narrower than a critical width was found to play a role of the edge potentials, and the critical width was estimated.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Current Applied Physics - Volume 17, Issue 10, October 2017, Pages 1244-1248
نویسندگان
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