Nonlinear transport of graphene in the quantum Hall regime
Source abstract
Abstract
Abstract We have studied the breakdown of the integer quantum Hall (QH) effect with fully broken symmetry, in an ultra-high mobility graphene device sandwiched between two single crystal hexagonal boron nitride substrates. The evolution and stabilities of the QH states are studied quantitatively through the nonlinear transport with dc Hall voltage bias. The mechanism of the QH breakdown in graphene and the movement of the Fermi energy with the electrical Hall field are discussed. This is the first study in which the stabilities of fully symmetry broken QH states are probed all together. Our results raise the possibility that the ν = ±6 states might be a better target for the quantum resistance standard.
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Research context
OpenAlex topics: Graphene research and applications · Quantum and electron transport phenomena · Carbon Nanotubes in Composites
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Peking University
High Pressure Group, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044,
Collaborative Innovation Center of Quantum Matter, Beijing 100871,
Funding
Grant-in-Aid for Scientific Research on Innovative Areas "Science of Atomic Layers" · National Institutes of Natural Sciences · National Natural Science Foundation of China · National Basic Research Program of China
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