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DOI | 10.1126/science.aao2521 |
Even-denominator fractional quantum Hall states in bilayer graphene | |
Li, J. I. A.1; Tan, C.2,3; Chen, S.4; Zeng, Y.1; Taniguehi, T.5; Watanabe, K.5; Hone, J.2; Dean, C. R.1 | |
2017-11-03 | |
发表期刊 | SCIENCE |
ISSN | 0036-8075 |
EISSN | 1095-9203 |
出版年 | 2017 |
卷号 | 358期号:6363页码:648-651 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Japan |
英文摘要 | The distinct Landau level spectrum of bilayer graphene (BLG) is predicted to support a non-abelian even-denominator fractional quantum Hall (FQH) state similar to the (5)/(2) state first identified in GaAs. However, the nature of this state has remained difficult to characterize. Here, we report transport measurements of a robust sequence of even-denominator FQH in dual-gated BLG devices. Parallel field measurement confirms the spin-polarized nature of the ground state, which is consistent with the Pfaffian/anti-Pfaffian description. The sensitivity of the even-denominator states to both filling fraction and transverse displacement field provides new opportunities for tunability. Our results suggest that BLG is a platform in which topological ground states with possible non-abelian excitations can be manipulated and controlled. |
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:000414240500037 |
WOS关键词 | LANDAU-LEVEL ; FILLING FACTOR ; QUANTIZATION ; COMPUTATION ; ANYONS ; PHASES |
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/197238 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | 1.Columbia Univ, Dept Phys, 538 W 120th St, New York, NY 10027 USA; 2.Columbia Univ, Dept Mech Engn, New York, NY 10027 USA; 3.Columbia Univ, Dept Elect Engn, New York, NY 10027 USA; 4.Columbia Univ, Dept Appl Phys & Appl Math, New York, NY USA; 5.Natl Inst Mat Sci, 1-1 Namiki, Tsukuba, Ibaraki, Japan |
推荐引用方式 GB/T 7714 | Li, J. I. A.,Tan, C.,Chen, S.,et al. Even-denominator fractional quantum Hall states in bilayer graphene[J]. SCIENCE,2017,358(6363):648-651. |
APA | Li, J. I. A..,Tan, C..,Chen, S..,Zeng, Y..,Taniguehi, T..,...&Dean, C. R..(2017).Even-denominator fractional quantum Hall states in bilayer graphene.SCIENCE,358(6363),648-651. |
MLA | Li, J. I. A.,et al."Even-denominator fractional quantum Hall states in bilayer graphene".SCIENCE 358.6363(2017):648-651. |
条目包含的文件 | 条目无相关文件。 |
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