物理学报2017，Vol.66Issue(14)：374-380,7.DOI:10.7498/aps.66.144204
光子石墨烯中赝磁场作用下的谷霍尔效应
Valley Hall effect induced by pseudomagnetic field in distorted photonic graphene
摘要
Abstract
Like the spin in spintronics, the valley index in graphene can be viewed as a new carrier of information, which is useful for designing modern electronic devices. Recently, we have applied the concept of valleytronics to photonic graphene, revealed valley-dependent beam splitting effect and realized pseudomagnetic field. The pseudomagnetic field enables a novel manipulation of photons. In this paper, the photonic analogy of valley Hall effect in uniaxially distorted photonic graphene is investigated. It is found that photons in two valleys are subjected to pseudomagnetic fields that are equal in strength but opposite in sign. With the increasing of distortion, the valley Hall effect becomes stronger. In addition, it is found that the photonic valley Hall effect can still be maintained under the influence of loss, although the beam intensity decreases. The photonic analogy of valley Hall effect induced by pseudomagnetic field in uniaxially distorted photonic graphene may be very useful for controlling the flow of light in future valley-polarized devices.关键词
光子晶体/光子石墨烯/赝磁场/谷霍尔效应Key words
photonic crystal/photonic graphene/pseudomagnetic field/valley Hall effect引用本文复制引用
邓富胜,孙勇,刘艳红,董丽娟,石云龙..光子石墨烯中赝磁场作用下的谷霍尔效应[J].物理学报,2017,66(14):374-380,7.基金项目
Project supported by the National Natural Science Foundation of China (Grant Nos. 11604186, 11674247, 11504211), the Natural Science Foundation of Shanxi Province, China (Grant No. 201601D202011), the Science and Technology Project of Shanxi Province, China (Grant No. 2015031002-2), and the Science and Technology Project of Datong, Shanxi Province, China (Grant Nos. 2016021, 2015015, 201308). 国家自然科学基金 (批准号: 11604186, 11674247, 11504211)、山西省自然科学基金 (批准号: 201601D202011)、山西省科技攻关项目 (批准号: 2015031002-2) 和大同市科技攻关项目 (批准号: 2016021, 2015015, 201308) 资助的课题. （Grant Nos. 11604186, 11674247, 11504211）
