Maher, P, Wang, L, Gao, Y et al. (9 more authors) (2014) Tunable fractional quantum Hall phases in bilayer graphene. Science, 345 (6192). pp. 61-64. ISSN 0036-8075
Abstract
Symmetry-breaking in a quantum system often leads to complex emergent behavior. In bilayer graphene (BLG), an electric field applied perpendicular to the basal plane breaks the inversion symmetry of the lattice, opening a band gap at the charge neutrality point. In a quantizing magnetic field, electron interactions can cause spontaneous symmetry-breaking within the spin and valley degrees of freedom, resulting in quantum Hall effect (QHE) states with complex order. Here, we report fractional QHE states in BLG that show phase transitions that can be tuned by a transverse electric field. This result provides a model platform with which to study the role of symmetry-breaking in emergent states with topological order.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | (c) 2014, author(s). This is an author produced version of a paper published in Science. Uploaded in accordance with the publisher's self-archiving policy. |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Physics and Astronomy (Leeds) > Theoretical Physics (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 17 Mar 2017 12:30 |
Last Modified: | 07 Feb 2018 00:21 |
Published Version: | https://doi.org/10.1126/science.1252875 |
Status: | Published |
Publisher: | American Association for the Advancement of Science |
Identification Number: | 10.1126/science.1252875 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:111215 |