کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1863440 1530559 2015 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Mechanical strain induced valley-dependent quantum magnetotransport of Dirac particles in graphene
ترجمه فارسی عنوان
فشار مکانیکی باعث ایجاد مغناطیسی کوانتومی وابسته به دره ذرات دیراک در گرافن می شود
کلمات کلیدی
فشار مکانیکی، نوسان ویس، هدایت
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک و نجوم (عمومی)
چکیده انگلیسی


• We explore the mechanical strain effects on the magnetotransport in graphene.
• We analytically derive the dc diffusion conductivity for null and finite strain.
• The strain removes the valley degeneracy in inversion symmetric Dirac cones.
• The strain causes the splitting of Landau levels for the different valleys.
• The strain induces the valley-dependence of the dc diffusion conductivity.

We have explored the mechanical strain effects on the magnetotransport in graphene with a 1D electrostatic periodic potential in the presence of a perpendicular magnetic field. We find that, in a strong magnetic field regime, the conductivity exhibits a superposition of the Shubnikov–de Haas and Weiss oscillations in each valley due to the electrical modulation. Especially, the strain removes the valley degeneracy of Landau levels in inversion symmetric Dirac cones. Accordingly, this causes the valley-dependence of the conductivity. These phenomena, absent in a freestanding graphene, are a consequence of the anomalous spectrum of carriers in a fully stained graphene.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters A - Volume 379, Issues 47–48, 18 December 2015, Pages 3123–3129
نویسندگان
, , , ,