Generation of valley polarized current in bilayer graphene

被引：98

作者：

Abergel, D. S. L. ^{[1
]}

Chakraborty, Tapash ^{[1
]}

机构：

[1] Univ Manitoba, Dept Phys & Astron, Winnipeg, MB R3T 2N2, Canada

来源：

APPLIED PHYSICS LETTERS | 2009年 / 95卷 / 06期

基金：

加拿大自然科学与工程研究理事会;

关键词：

Brillouin zones; energy gap; graphene; light polarisation; BERRYS PHASE;

D O I：

10.1063/1.3205117

中图分类号：

O59 [应用物理学];

学科分类号：

070305 [高分子化学与物理];

摘要：

We propose a device for the generation of valley polarized electronic current in bilayer graphene. By analyzing the response of this material to intense terahertz frequency light in the presence of a transverse electric field, we demonstrate that dynamical states are induced in the gapped energy region, and if the system parameters are properly tuned, these states exist only in one valley. The valley polarized states can then be used to filter an arbitrary electron current, so generating a valley polarized current.

引用

页数：3

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