{"title":"Tunnel Valley Current Filter in the Partially Overlapped Graphene under the Vertical Electric Field","authors":"Ryo Tamura","doi":"10.7566/jpsj.92.123704","DOIUrl":null,"url":null,"abstract":"The tunnel current (TC) and valley current (VC) are crucial in realizing high-speed and energy-saving in next-generation devices. This paper presents the TC and VC link in the partially overlapped graphene. Under the vertical electric field, the two graphene layers have the opposite AB sublattice symmetry, followed by a block on the intravalley transmission. In the allowed intervalley transmission, the difference in the phase of the decay factor prefers only one of the valleys in the output according to the overlapped length. These results suggest that the band gap with no edge state is a new platform of valleytronics.","PeriodicalId":509167,"journal":{"name":"Journal of the Physical Society of Japan","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2023-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of the Physical Society of Japan","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.7566/jpsj.92.123704","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
The tunnel current (TC) and valley current (VC) are crucial in realizing high-speed and energy-saving in next-generation devices. This paper presents the TC and VC link in the partially overlapped graphene. Under the vertical electric field, the two graphene layers have the opposite AB sublattice symmetry, followed by a block on the intravalley transmission. In the allowed intervalley transmission, the difference in the phase of the decay factor prefers only one of the valleys in the output according to the overlapped length. These results suggest that the band gap with no edge state is a new platform of valleytronics.
隧道电流(TC)和山谷电流(VC)对于实现下一代器件的高速和节能至关重要。本文介绍了部分重叠石墨烯中的隧道电流和谷电流链路。在垂直电场作用下,两层石墨烯具有相反的 AB 亚晶格对称性,从而阻碍了谷内传输。在允许的谷间传输中,衰减因子的相位差根据重叠长度只偏好输出中的一个谷。这些结果表明,无边缘状态的带隙是谷电技术的一个新平台。