کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
702002 891065 2011 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Electronic properties of bilayer AA-stacked zigzag nanographene ribbons
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی برق و الکترونیک
پیش نمایش صفحه اول مقاله
Electronic properties of bilayer AA-stacked zigzag nanographene ribbons
چکیده انگلیسی

First-principles calculations within the generalized gradient approximation are employed to calculate the electronic properties of the bilayer AA-stacked zigzag nanographene ribbon. The AFM–AFM configuration (antiferromagnetic and antiferromagnetic configurations for the intralayer and interlayer spin arrangements, respectively) is predicted to be the most stable system. The interlayer interactions alter the band structure such as the modulation of energy dispersions, the generation of new band-edge states, and the state degeneracy. The energy gap is inversely proportional to the ribbon width. As compared with the monolayer zigzag nanographene ribbon, the density of states exhibits more asymmetric peaks, and some peaks at low energy are enhanced due to the state degeneracy. These predicted results can be identified by scanning tunneling spectroscopy (STS) or the measurements of optical spectra.

Research Highlights
► The electronic properties are calculated by First-principles calculations.
► The AFM-AFM configuration is predicted to be the most stable system.
► The interlayer interactions change the energy dispersions and the state degeneracy.
► The energy gap is inversely proportional to the ribbon width.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Diamond and Related Materials - Volume 20, Issue 4, April 2011, Pages 505–508
نویسندگان
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