Unconventional Hall response in the quantum limit of HfTe5

被引:51
作者
Galeski, S. [1 ]
Zhao, X. [2 ,3 ,4 ,5 ]
Wawrzynczak, R. [1 ]
Meng, T. [6 ,7 ]
Forster, T. [8 ,9 ]
Lozano, P. M. [10 ,11 ]
Honnali, S. [1 ]
Lamba, N. [1 ]
Ehmcke, T. [6 ,7 ]
Markou, A. [1 ]
Li, Q. [10 ,11 ]
Gu, G. [11 ]
Zhu, W. [2 ,3 ,5 ]
Wosnitza, J. [8 ,9 ,12 ]
Felser, C. [1 ]
Chen, G. F. [2 ,3 ,4 ,5 ]
Gooth, J. [1 ,12 ]
机构
[1] Max Planck Inst Chem Phys Solids, Nothnitzer Str 40, D-01187 Dresden, Germany
[2] Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China
[3] Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China
[4] Songshan Lake Mat Lab, Dongguan 523808, Guangdong, Peoples R China
[5] Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China
[6] Tech Univ Dresden, Inst Theoret Phys, D-01062 Dresden, Germany
[7] Tech Univ Dresden, Warzburg Dresden Cluster Excellence Ct Qmat, D-01062 Dresden, Germany
[8] Helmholtz Zentrum Dresden Rossendorf, Hochfeld Magnetlab Dresden HLD EMFL, D-01328 Dresden, Germany
[9] Helmholtz Zentrum Dresden Rossendorf, Wurzburg Dresden Cluster Excellence Ct Qmat, D-01328 Dresden, Germany
[10] SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA
[11] Brookhaven Natl Lab, Condensed Matter Phys & Mat Sci Dept, Upton, NY 11973 USA
[12] Tech Univ Dresden, Inst Festkorper & Mat Phys, D-01062 Dresden, Germany
关键词
3-DIMENSIONAL ELECTRON-GAS; TRANSITION; WELL;
D O I
10.1038/s41467-020-19773-y
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
Interacting electrons confined to their lowest Landau level in a high magnetic field can form a variety of correlated states, some of which manifest themselves in a Hall effect. Although such states have been predicted to occur in three-dimensional semimetals, a corresponding Hall response has not yet been experimentally observed. Here, we report the observation of an unconventional Hall response in the quantum limit of the bulk semimetal HfTe5, adjacent to the three-dimensional quantum Hall effect of a single electron band at low magnetic fields. The additional plateau-like feature in the Hall conductivity of the lowest Landau level is accompanied by a Shubnikov-de Haas minimum in the longitudinal electrical resistivity and its magnitude relates as 3/5 to the height of the last plateau of the three-dimensional quantum Hall effect. Our findings are consistent with strong electron-electron interactions, stabilizing an unconventional variant of the Hall effect in a three-dimensional material in the quantum limit. There is a long-standing experimental effort to observe field-induced correlated states in three-dimensional materials. Here, the authors observe an unconventional Hall response in the quantum limit of the bulk semimetal HfTe5 with a plateau-like feature in the Hall conductivity.
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页数:8
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