Mode-Matching Approach to Current Blocking Effect in Graphene Nanoribbons

被引：8

作者：

Deng, Hai-Yao ^{[1
]}

Wakabayashi, Katsunori ^{[2
]}

Lam, Chi-Hang ^{[1
]}

机构：

[1] Hong Kong Polytech Univ, Dept Appl Phys, Kowloon, Hong Kong, Peoples R China

[2] Natl Inst Mat Sci, Int Ctr Mat Nanoarchitecton WPI MANA, Tsukuba, Ibaraki 3050044, Japan

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2013年 / 82卷 / 10期

关键词：

graphene nanoribbon; edge modes; mode-matching method; BERRYS PHASE;

D O I：

10.7566/JPSJ.82.104707

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Zigzag graphene nanoribbon (ZGNR) p-n junctions display parity-dependent transport on the number of zigzag chains. We revisit this phenomenon using the mode-matching method and derive analytical solutions for the transmission probability. It is pointed out that the randomness of the interface tilting destroys the parity effect if the spread of the tilting parameter is larger than the lattice constant. We discuss the origin of the parity effect in connection with the lattice symmetry. Junctions with bearded ZGNRs are shown to strongly suppress electron transmission.

引用

页数：5

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