Journal
PHYSICAL REVIEW B
Volume 98, Issue 24, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.98.245417
Keywords
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Funding
- National Key Research and Development Program [2016YFA0301700]
- NNSFC [11474265, 11504240, 11434009]
- China Government Youth 1000-Plan Talent Program
- Anhui Initiative in Quantum Information Technologies
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We theoretically investigate a folded bilayer graphene structure as an experimentally realizable platform to produce the one-dimensional topological zero-line modes. We demonstrate that the folded bilayer graphene under an external gate potential enables tunable topologically conducting channels to be formed in the folded region, and that a perpendicular magnetic field can be used to enhance the conducting when external impurities are present. We also show experimentally that our proposed folded bilayer graphene structure can be fabricated in a controllable manner. Our proposed system greatly simplifies the technical difficulty in the original proposal by considering a planar bilayer graphene (i.e., precisely manipulating the alignment between vertical and lateral gates on bilayer graphene), laying out a strategy in designing practical low-power electronics by utilizing the gate-induced topological conducting channels.
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