Josephson Current For a Graphene Nanoribbon Using a Lattice Model
Publish Year: 1397
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_JITF-2-1_003
تاریخ نمایه سازی: 1 دی 1398
Abstract:
A tight binding approach based on the Bogoliubov-de Gennes approach has been used to calculate the DC Josephson current for a lattice model for S-GNR-S junctions , for short junctions with respect to superconducting coherence length. We calculate the phase, length, width and chemical potential dependence at the Josephson junction and discuss the similarities and differences with regard to the theoretical and experimental results obtained for graphene. To make calculations on graphene, using a lattice model, we convert the graphene honeycomb structure to a brick lattice structure that does not change the lattice topology. Then, by removing several atoms from the lattice , we create the simple vacancy defects in the brick lattice and we also calculate Josephson current in the apparance of these vacancies .
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Authors
Somayyeh Zareei
Physics Departement, alzahra university , Tehran , Iran
Vahid Daadmehr
Physics Dept., Physics and Chemistry Faculty, Alzahra University
Hosein Hakimi Pajouh
Assistant ProfessorPhysics Department Alzahra UniversityTehran, Iran
Zahra Faraei
Department of Physics, Sharif University of Technology, Tehran, I.R. Iran