کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5450017 1512856 2017 29 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Structural defects influence on the conductance of strained zigzag graphene nanoribbon
ترجمه فارسی عنوان
نقص ساختاری بر روی رسانایی نانوروبن گرافن مقعر زاویه ای تاثیر می گذارد
کلمات کلیدی
نانوربین گرافن زیگزاگ، نقص ساختاری، کشش یک جانبه، حمل بار اسپین، اتصال اسپین یا راشا، اتصال محکم،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد مواد الکترونیکی، نوری و مغناطیسی
چکیده انگلیسی
In this paper, we investigate the influence of point structural defects on the transport properties of zigzag graphene nanoribbons (ZGNRs) under uniaxial strain field, using the numerical studies based on the ab-initio calculation, the standard tight-binding model and Green's functions. The calculation results show that the direction of applied strain and defect type significantly affect the conductance properties of ZGNRs. The conductance of the defective nanoribbons generally decreases and some dips corresponding to complete electron backscattering is appeared. This behavior is originated from the different coupling between the conducting electronic states influenced by the wave function modification around the Fermi energy which depends on the defect type. We show that the presence of defects leads to a significant increase in local current. Furthermore, we have investigated the strain-tunable spin transport of defective ZGNRs in the presence of the exchange magnetic field and Rashba spin-orbit coupling (RSOC).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica E: Low-dimensional Systems and Nanostructures - Volume 93, September 2017, Pages 216-223
نویسندگان
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