کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1808370 1525157 2016 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Edge states and phase diagram for graphene under polarized light
ترجمه فارسی عنوان
حالت های لبه و نمودار فاز گرافن تحت نور پلاریزه
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
چکیده انگلیسی

In this work, we investigate the topological phase transitions in graphene under the modulation of circularly polarized light, by analyzing the changes of edge states and its topological structures. A full phase diagram, with several different topological phases, is presented in the parameter space spanned by the driving frequency and light strength. We find that the high-Chern number behavior is very common in the driven system. While the one-photon resonance can create the chiral edge states in the π-gap, the two-photon resonance will induce the counter-propagating edge modes in the zero-energy gap. When the driving light strength is strong, the number and even the chirality of the edge states may change in the π-gap. The robustness of the edge states to disorder potential is also examined. We close by discussing the feasibility of experimental proposals.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica B: Condensed Matter - Volume 492, 1 July 2016, Pages 1–6
نویسندگان
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