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Tunable even- and odd-denominator fractional quantum Hall states in trilayer graphene

文献类型：期刊论文

作者Chen, Yiwei3; Huang, Yan3; Li, Qingxin3; Tong, Bingbing1,4; Kuang, Guangli5; Xi, Chuanying5; Watanabe, Kenji6; Taniguchi, Takashi7; Liu, Guangtong1,4,8; Zhu, Zheng9
刊名NATURE COMMUNICATIONS
出版日期2024-07-24
卷号15
DOI10.1038/s41467-024-50589-2
通讯作者Liu, Guangtong(gtliu@iphy.ac.cn) ; Wu, Ying-Hai(yinghaiwu88@hust.edu.cn) ; Wang, Lei(leiwang@nju.edu.cn)
英文摘要Fractional quantum Hall (FQH) states are exotic quantum many-body phases whose elementary charged excitations are anyons obeying fractional braiding statistics. While most FQH states are believed to have Abelian anyons, the Moore-Read type states with even denominators - appearing at half filling of a Landau level (LL) - are predicted to possess non-Abelian excitations with appealing potential in topological quantum computation. These states, however, depend sensitively on the orbital contents of the single-particle LL wavefunctions and the LL mixing. Here we report magnetotransport measurements on Bernal-stacked trilayer graphene, whose multiband structure facilitates interlaced LL mixing, which can be controlled by external magnetic and displacement fields. We observe robust FQH states including even-denominator ones at filling factors nu = - 9/2, - 3/2, 3/2 and 9/2. In addition, we fine-tune the LL mixing and crossings to drive quantum phase transitions of these half-filling states and neighbouring odd-denominator ones, exhibiting related emerging and waning behaviour. The fractional quantum Hall effect offers a potential platform to harness non-Abelian anyons. Here, the authors report fractional quantum Hall states in trilayer graphene and drive quantum phase transitions between neighbouring states.
资助项目National Key Projects for Research and Development of China[2021YFA1400400] ; National Key Projects for Research and Development of China[2022YFA1204700] ; National Natural Science Foundation of China[12074375] ; Natural Science Foundation of Jiangsu Province[BK20220066] ; Strategic Priority Research Program of CAS ; JSPS KAKENHI[21H05233] ; JSPS KAKENHI[23H02052] ; World Premier International Research Center Initiative (WPI), MEXT, Japan ; China Ministry of Sci and Tech[2022YFA1403902] ; Priority Program of CAS[XDB28000000] ; NSFC[11674278] ; Chinese Academy of Sciences[JZHKYPT-2021-08] ; NSFC of China[9206520] ; National Basic Research Program of China from the MOST[2022YFA1602803] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB33010300] ; Synergic Extreme Condition User Facility ; Innovation Program for Quantum Science and Technology[2021ZD03026001]
WOS研究方向Science & Technology - Other Topics
语种英语
WOS记录号WOS:001275548800008
出版者NATURE PORTFOLIO
资助机构National Key Projects for Research and Development of China ; National Natural Science Foundation of China ; Natural Science Foundation of Jiangsu Province ; Strategic Priority Research Program of CAS ; JSPS KAKENHI ; World Premier International Research Center Initiative (WPI), MEXT, Japan ; China Ministry of Sci and Tech ; Priority Program of CAS ; NSFC ; Chinese Academy of Sciences ; NSFC of China ; National Basic Research Program of China from the MOST ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Synergic Extreme Condition User Facility ; Innovation Program for Quantum Science and Technology
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/137274]  
专题中国科学院合肥物质科学研究院
通讯作者Liu, Guangtong; Wu, Ying-Hai; Wang, Lei
作者单位1.Hefei Natl Lab, Hefei 230088, Peoples R China
2.Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Peoples R China
3.Nanjing Univ, Sch Phys, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China
4.Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China
5.Chinese Acad Sci, Anhui Prov Key Lab Condensed Matter Phys Extreme C, High Magnet Field Lab, Hefei 230031, Peoples R China
6.Natl Inst Mat Sci, Res Ctr Elect & Opt Mat, 1-1 Namiki, Tsukuba 3050044, Japan
7.Natl Inst Mat Sci, Res Ctr Mat Nanoarchitecton, 1-1 Namiki, Tsukuba 3050044, Japan
8.Songshan Lake Mat Lab, Dongguan 523808, Peoples R China
9.Univ Chinese Acad Sci, Kavli Inst Theoret Sci, Beijing 100049, Peoples R China
10.Univ Chinese Acad Sci, CAS Ctr Excellence Topol Quantum Computat, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Chen, Yiwei,Huang, Yan,Li, Qingxin,et al. Tunable even- and odd-denominator fractional quantum Hall states in trilayer graphene[J]. NATURE COMMUNICATIONS,2024,15.
APA Chen, Yiwei.,Huang, Yan.,Li, Qingxin.,Tong, Bingbing.,Kuang, Guangli.,...&Wang, Lei.(2024).Tunable even- and odd-denominator fractional quantum Hall states in trilayer graphene.NATURE COMMUNICATIONS,15.
MLA Chen, Yiwei,et al."Tunable even- and odd-denominator fractional quantum Hall states in trilayer graphene".NATURE COMMUNICATIONS 15(2024).

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来源：合肥物质科学研究院

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