کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1810568 | 1025565 | 2012 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Analytical dispersion relations of three graphynes
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موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
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چکیده انگلیسی
By using tight-binding approximation, we analytically investigate three interesting two-dimensional carbon allotropes: α-graphyneα-graphyne, 6,6,12-graphyne and β-graphyneβ-graphyne, which contain anisotropic Dirac points at their fermi surfaces. We obtain concrete analytical expressions of the energy dispersion relations in the vicinity of the Diarc points of the three graphynes. Furthermore, we find that there exists an unusual phenomenon in the β-graphyneβ-graphyne, that is, the quantum Hall effect diminishes when its Dirac points are all located at the M points, which is different both from the common material and graphene.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica B: Condensed Matter - Volume 407, Issue 21, 1 November 2012, Pages 4387–4390
Journal: Physica B: Condensed Matter - Volume 407, Issue 21, 1 November 2012, Pages 4387–4390
نویسندگان
Jie Cao, Chi Pui Tang, Shi-Jie Xiong,