Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1126/science.aal0212 |
An on/off Berry phase switch in circular graphene resonators | |
Ghahari, Fereshte1,2; Walkup, Daniel1,2; Gutierrez, Christopher1,2; Rodriguez-Nieva, Joaquin F.3,4; Zhao, Yue2,5; Wyrick, Jonathan1; Natterer, Fabian D.1,6; Cullen, William G.1; Watanabe, Kenji7; Taniguchi, Takashi7; Levitov, Leonid S.; Zhitenev, Nikolai B.1; Stroscio, Joseph A.1 | |
2017-05-26 | |
发表期刊 | SCIENCE
![]() |
ISSN | 0036-8075 |
EISSN | 1095-9203 |
出版年 | 2017 |
卷号 | 356期号:6340页码:845-U133 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Peoples R China; Switzerland; Japan |
英文摘要 | The phase of a quantum state may not return to its original value after the system's parameters cycle around a closed path; instead, the wave function may acquire a measurable phase difference called the Berry phase. Berry phases typically have been accessed through interference experiments. Here, we demonstrate an unusual Berry phase-induced spectroscopic feature: a sudden and large increase in the energy of angular-momentum states in circular graphene p-n junction resonators when a relatively small critical magnetic field is reached. This behavior results from turning on a p Berry phase associated with the topological properties of Dirac fermions in graphene. The Berry phase can be switched on and off with small magnetic field changes on the order of 10 millitesla, potentially enabling a variety of optoelectronic graphene device applications. |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000401957900038 |
WOS关键词 | TOPOLOGICAL PHASE ; DIRAC FERMIONS ; QUANTUM DOTS |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/196132 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | 1.Natl Inst Stand & Technol, Ctr Nanoscale Sci & Technol, Gaithersburg, MD 20899 USA; 2.Univ Maryland, Maryland NanoCtr, College Pk, MD 20742 USA; 3.MIT, Dept Phys, Cambridge, MA 02139 USA; 4.Harvard Univ, Dept Phys, Cambridge, MA 02138 USA; 5.South Univ Sci & Technol China, Dept Phys, Shenzhen, Peoples R China; 6.Ecole Polytech Fed Lausanne, Inst Phys, Lausanne, Switzerland; 7.Natl Inst Mat Sci, Tsukuba, Ibaraki 3050044, Japan |
推荐引用方式 GB/T 7714 | Ghahari, Fereshte,Walkup, Daniel,Gutierrez, Christopher,et al. An on/off Berry phase switch in circular graphene resonators[J]. SCIENCE,2017,356(6340):845-U133. |
APA | Ghahari, Fereshte.,Walkup, Daniel.,Gutierrez, Christopher.,Rodriguez-Nieva, Joaquin F..,Zhao, Yue.,...&Stroscio, Joseph A..(2017).An on/off Berry phase switch in circular graphene resonators.SCIENCE,356(6340),845-U133. |
MLA | Ghahari, Fereshte,et al."An on/off Berry phase switch in circular graphene resonators".SCIENCE 356.6340(2017):845-U133. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论