Three-dimensional quasiquantized Hall insulator phase in SrSi2

被引：6

作者：

Manna, K. ^{[1
,2
]}

Kumar, N. ^{[2
,3
]}

Chattopadhyay, S. ^{[4
,5
]}

Noky, J. ^{[2
]}

Yao, M. ^{[2
]}

Park, J. ^{[4
,5
]}

Foerster, T. ^{[4
,5
]}

Uhlarz, M. ^{[4
,5
]}

Chakraborty, T. ^{[2
]}

Schwarze, B. V. ^{[4
,5
]}

Hornung, J. ^{[4
,5
]}

Strocov, V. N. ^{[6
]}

Borrmann, H. ^{[2
]}

Shekhar, C. ^{[2
]}

Sun, Y. ^{[2
]}

Bose, S. N.

Wosnitza, J. ^{[4
,5
,7
]}

Felser, C. ^{[2
]}

Gooth, J. ^{[2
]}

机构：

[1] Indian Inst Technol Delhi, Hauz Khas, New Delhi 110016, India

[2] Max Planck Inst Chem Phys Solids, Nothnitzer Str 40, D-01187 Dresden, Germany

[3] SN Bose Natl Ctr Basic Sci, Kolkata 700106, India

[4] Helmholtz Zentrum Dresden Rossendorf, Hochfeld Magnetlabor Dresden HLD EMFL, D-01328 Dresden, Germany

[5] Helmholtz Zentrum Dresden Rossendorf, Wurzburg Dresden Cluster Excellence ctqmat, D-01328 Dresden, Germany

[6] Paul Scherrer Inst, Swiss Light Source, CH-5232 Villigen, Switzerland

[7] Tech Univ Dresden, Inst Festkorper & Mat, D-01062 Dresden, Germany

来源：

PHYSICAL REVIEW B | 2022年 / 106卷 / 04期

基金：

欧洲研究理事会;

关键词：

PERCOLATION; TRANSITION; BEAMLINE; INTEGER; DUALITY; ADRESS; STATES;

D O I：

10.1103/PhysRevB.106.L041113

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In insulators, the longitudinal resistivity becomes infinitely large at zero temperature. For classical insulators, the Hall conductivity becomes zero at the same time. However, there are special systems, such as two-dimensional quantum Hall insulators, in which a more complex scenario is observed at high magnetic fields. Here, we report experimental evidence for a quasiquantized Hall insulator in the quantum limit of the three-dimensional compound SrSi2. Our measurements reveal a magnetic-field range, in which the longitudinal resistivity diverges with decreasing temperature, while the Hall conductivity approaches a quasiquantized value that is given only by the conductance quantum and the Fermi wave vector in the field direction. The quasiquantized Hall insulator appears in a magnetic field induced insulating ground state of three-dimensional materials and is deeply rooted in quantum Hall physics.

引用

页数：6

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