Controllable Goos-Hänchen shift in graphene triangular double barrier

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• 作者：Miloud Mekkaoui^a ; Ahmed Jellal^a ; ^b ; ^{ajellal@ictp.it} ; ^{a.jellal@ucd.ac.ma} ; Hocine Bahlouli^b ; ^c
• 关键词：Graphene ; Double barriers ; Scattering ; Goos-H&auml ; nchen shifts
• 刊名：Physica E: Low-dimensional Systems and Nanostructures
• 出版年：2017
• 出版时间：March 2017
• 年：2017
• 卷：87
• 期：Complete
• 页码：266-272
• 全文大小：972 K
• 卷排序：87

文摘

Goos-Hänchen shifts for Dirac fermions in graphene scattered by a triangular double barrier potential is stydied. The massless Dirac-like equation was used to describe the scattered fermions by such potential configuration. It showed that the GHL shifts is affected by the geometrical structure of the double barrier. It is observed that the GHL shifts change sign at the transmission zero energies and exhibit enhanced peaks at each bound state associated with the double barrier when the incident angle is less than the critical angle associated with the total re ection.