Details
| Original language | English |
|---|---|
| Pages (from-to) | 25-30 |
| Number of pages | 6 |
| Journal | Current applied physics |
| Volume | 27 |
| Early online date | 16 Apr 2021 |
| Publication status | Published - Jul 2021 |
Abstract
The complex nature of filling factor ν = 0 of monolayer graphene is studied in magnetotransport experiments. As a function of perpendicular magnetic field a metal-insulator transition is observed, which is attributed to disorder-induced Landau level broadening in the canted antiferromagnetic phase. In the metallic regime a separation of the zeroth Landau level appears and signs of the quantum spin Hall effect are seen near ν = 0. In addition to local transport, nonlocal transport experiments show results being consistent with helical edge transport.
Keywords
- Disorder, Graphene, Helical transport, Landau level broadening, ν = 0
ASJC Scopus subject areas
- Materials Science(all)
- General Materials Science
- Physics and Astronomy(all)
- General Physics and Astronomy
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In: Current applied physics, Vol. 27, 07.2021, p. 25-30.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Helical-edge transport near ν = 0 of monolayer graphene
AU - Hong, Sung Ju
AU - Belke, Christopher
AU - Rode, Johannes C.
AU - Brechtken, Benedikt
AU - Haug, Rolf J.
N1 - Funding Information: The authors gratefully acknowledge valuable discussions with P. G. Silvestrov and P. Recher. This work is supported by School for Contacts in Nanosystems, DFG within priority program SPP 1459, Joint Lower Saxony-Israeli research project, and Fundamentals of Physics and Metrology Initiative of Lower Saxony. Part of this study has been performed using facilities at the LNQE, Leibniz Universit?t Hannover, Germany.
PY - 2021/7
Y1 - 2021/7
N2 - The complex nature of filling factor ν = 0 of monolayer graphene is studied in magnetotransport experiments. As a function of perpendicular magnetic field a metal-insulator transition is observed, which is attributed to disorder-induced Landau level broadening in the canted antiferromagnetic phase. In the metallic regime a separation of the zeroth Landau level appears and signs of the quantum spin Hall effect are seen near ν = 0. In addition to local transport, nonlocal transport experiments show results being consistent with helical edge transport.
AB - The complex nature of filling factor ν = 0 of monolayer graphene is studied in magnetotransport experiments. As a function of perpendicular magnetic field a metal-insulator transition is observed, which is attributed to disorder-induced Landau level broadening in the canted antiferromagnetic phase. In the metallic regime a separation of the zeroth Landau level appears and signs of the quantum spin Hall effect are seen near ν = 0. In addition to local transport, nonlocal transport experiments show results being consistent with helical edge transport.
KW - Disorder
KW - Graphene
KW - Helical transport
KW - Landau level broadening
KW - ν = 0
UR - http://www.scopus.com/inward/record.url?scp=85104081495&partnerID=8YFLogxK
U2 - 10.1016/j.cap.2021.04.001
DO - 10.1016/j.cap.2021.04.001
M3 - Article
AN - SCOPUS:85104081495
VL - 27
SP - 25
EP - 30
JO - Current applied physics
JF - Current applied physics
SN - 1567-1739
ER -