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  Three-dimensional quasiquantized Hall insulator phase in SrSi2

Manna, K., Kumar, N., Chattopadhyay, S., Noky, J., Yao, M., Park, J., et al. (2022). Three-dimensional quasiquantized Hall insulator phase in SrSi2. Physical Review B, 106(4): L041113, pp. 1-6. doi:10.1103/PhysRevB.106.L041113.

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Manna, K.1, Author           
Kumar, N.1, Author           
Chattopadhyay, S.2, Author
Noky, J.1, Author           
Yao, M.1, Author           
Park, J.2, Author
Foerster, T.2, Author
Uhlarz, M.2, Author
Chakraborty, T.1, Author           
Schwarze, B. V.2, Author
Hornung, J.2, Author
Strocov, V. N.2, Author
Borrmann, H.3, Author           
Shekhar, C.4, Author           
Sun, Y.1, Author           
Bose, S. N.2, Author
Wosnitza, J.2, Author
Felser, C.5, Author           
Gooth, J.6, Author           
Affiliations:
1Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863425              
2External Organizations, ou_persistent22              
3Horst Borrmann, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863410              
4Chandra Shekhar, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863428              
5Claudia Felser, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863429              
6Nanostructured Quantum Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_3018212              

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 Abstract: 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.

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Language(s): eng - English
 Dates: 2022-07-182022-07-18
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
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Title: Physical Review B
  Abbreviation : Phys. Rev. B
Source Genre: Journal
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Publ. Info: Woodbury, NY : American Physical Society
Pages: - Volume / Issue: 106 (4) Sequence Number: L041113 Start / End Page: 1 - 6 Identifier: ISSN: 1098-0121
CoNE: https://pure.mpg.de/cone/journals/resource/954925225008