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Anomalous quantization trajectory and parity anomaly in Co cluster decorated BiSbTeSe2 nanodevices
Zhang, Shuai1,2; Pi, Li3,4,5; Wang, Rui1,2; Yu, Geliang1,2; Pan, Xing-Chen1,2; Wei, Zhongxia1,2; Zhang, Jinglei4,5; Xi, Chuanying4,5; Bai, Zhanbin1,2; Fei, Fucong1,2; Wang, Mingyu1,2; Liao, Jian6; Li, Yongqing6; Wang, Xuefeng7,8; Song, Fengqi1,2; Zhang, Yuheng4,5; Wang, Baigeng1,2; Xing, Dingyu1,2; Wang, Guanghou1,2
2017-10-17
发表期刊NATURE COMMUNICATIONS
卷号8期号:页码:1-6
摘要Dirac Fermions with different helicities exist on the top and bottom surfaces of topological insulators, offering a rare opportunity to break the degeneracy protected by the no-go theorem. Through the application of Co clusters, quantum Hall plateaus were modulated for the topological insulator BiSbTeSe2, allowing an optimized surface transport. Here, using renormalization group flow diagrams, we show the extraction of two sets of converging points in the conductivity tensor space, revealing that the top surface exhibits an anomalous quantization trajectory, while the bottom surface retains the 1/2 quantization. Co clusters are believed to induce a sizeable Zeeman gap (> 4.8 meV) through antiferromagnetic exchange coupling, which delays the Landau level hybridization on the top surface for a moderate magnetic field. A quasi-half-integer plateau also appears at -7.2 Tesla. This allows us to study the interesting physics of parity anomaly, and paves the way for further studies simulating exotic particles in condensed matter physics.
文章类型Article
WOS标题词Science & Technology
资助者National Key P&D Program of China(2017YFA0303203) ; National Key Projects for Basic Research in China(2013CB922103) ; National Natural Science Foundation of China(U1732273 ; NSF of Jiangsu Province(BK20160659 ; Fundamental Research Funds for the Central Universities(020414380056 ; Opening Project of Wuhan National High Magnetic Field Center ; 91421109 ; BK20130054) ; 020414380057) ; 91622115 ; 11522432 ; 11574217 ; 61176088 ; 11274003) ; National Key P&D Program of China(2017YFA0303203) ; National Key Projects for Basic Research in China(2013CB922103) ; National Natural Science Foundation of China(U1732273 ; NSF of Jiangsu Province(BK20160659 ; Fundamental Research Funds for the Central Universities(020414380056 ; Opening Project of Wuhan National High Magnetic Field Center ; 91421109 ; BK20130054) ; 020414380057) ; 91622115 ; 11522432 ; 11574217 ; 61176088 ; 11274003)
DOI10.1038/s41467-017-01065-7
关键词[WOS]FERROMAGNETIC TOPOLOGICAL INSULATOR ; DIRAC FERMIONS ; QUANTUM TRANSPORT ; SURFACE-STATE ; GRAPHENE ; REALIZATION ; BI2TE3 ; SPIN
收录类别SCI
语种英语
资助者National Key P&D Program of China(2017YFA0303203) ; National Key Projects for Basic Research in China(2013CB922103) ; National Natural Science Foundation of China(U1732273 ; NSF of Jiangsu Province(BK20160659 ; Fundamental Research Funds for the Central Universities(020414380056 ; Opening Project of Wuhan National High Magnetic Field Center ; 91421109 ; BK20130054) ; 020414380057) ; 91622115 ; 11522432 ; 11574217 ; 61176088 ; 11274003) ; National Key P&D Program of China(2017YFA0303203) ; National Key Projects for Basic Research in China(2013CB922103) ; National Natural Science Foundation of China(U1732273 ; NSF of Jiangsu Province(BK20160659 ; Fundamental Research Funds for the Central Universities(020414380056 ; Opening Project of Wuhan National High Magnetic Field Center ; 91421109 ; BK20130054) ; 020414380057) ; 91622115 ; 11522432 ; 11574217 ; 61176088 ; 11274003)
WOS研究方向Science & Technology - Other Topics
WOS类目Multidisciplinary Sciences
WOS记录号WOS:000413117400011
引用统计
被引频次:7[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.hfcas.ac.cn:8080/handle/334002/33814
专题中科院强磁场科学中心
作者单位1.Nanjing Univ, Coll Phys, Natl Lab Solid State Microstruct, Nanjing 210093, Jiangsu, Peoples R China
2.Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Jiangsu, Peoples R China
3.Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Anhui, Peoples R China
4.Chinese Acad Sci, High Field Magnet Lab, Hefei 230031, Anhui, Peoples R China
5.Collaborat Innovat Ctr Adv Microstruct, Hefei 230031, Anhui, Peoples R China
6.Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China
7.Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Natl Lab Solid State Microstruct, Nanjing 210093, Jiangsu, Peoples R China
8.Nanjing Univ, Sch Elect Sci & Engn, Nanjing 210093, Jiangsu, Peoples R China
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Zhang, Shuai,Pi, Li,Wang, Rui,et al. Anomalous quantization trajectory and parity anomaly in Co cluster decorated BiSbTeSe2 nanodevices[J]. NATURE COMMUNICATIONS,2017,8(无):1-6.
APA Zhang, Shuai.,Pi, Li.,Wang, Rui.,Yu, Geliang.,Pan, Xing-Chen.,...&Wang, Guanghou.(2017).Anomalous quantization trajectory and parity anomaly in Co cluster decorated BiSbTeSe2 nanodevices.NATURE COMMUNICATIONS,8(无),1-6.
MLA Zhang, Shuai,et al."Anomalous quantization trajectory and parity anomaly in Co cluster decorated BiSbTeSe2 nanodevices".NATURE COMMUNICATIONS 8.无(2017):1-6.
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