Interaction-driven quantum Hall wedding cake–like structures in graphene quantum dots
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1810.00214.pdf
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Author(s)
Gutiérrez, Christopher
Walkup, Daniel
Ghahari, Fereshte
Rodriguez-Nieva, Joaquin F.
Watanabe, Kenji
Taniguchi, Takashi
Zhitenev, Nikolai B.
Stroscio, Joseph A.
Lewandowski, Cyprian Krzysztof
Levitov, Leonid
Date Issued
August 2018
Journal
Science
Publisher
American Association for the Advancement of Science (AAAS)
Citation
Gutiérrez, Christopher et al. “Interaction-Driven Quantum Hall Wedding Cake–like Structures in Graphene Quantum Dots.” Science 361, 6404 (August 2018): 789–794. doi:10.1126/science.aar2014. © 2018 The Author(s)
Version
Author's final manuscript
Abstract
Quantum-relativistic matter is ubiquitous in nature; however, it is notoriously difficult to probe. The ease with which external electric and magnetic fields can be introduced in graphene opens a door to creating a tabletop prototype of strongly confined relativistic matter. Here, through a detailed spectroscopic mapping, we directly visualize the interplay between spatial and magnetic confinement in a circular graphene resonator as atomic-like shell states condense into Landau levels. We directly observe the development of a “wedding cake”–like structure of concentric regions of compressible-incompressible quantum Hall states, a signature of electron interactions in the system. Solid-state experiments can, therefore, yield insights into the behavior of quantum-relativistic matter under extreme conditions.
MIT Department
Massachusetts Institute of Technology. Department of Physics
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Creative Commons Attribution-Noncommercial-Share Alike
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DOI of Published Version
https://doi.org/10.1126/SCIENCE.AAR2014
