Landau velocity for collective quantum hall breakdown in bilayer graphene
Breakdown of the quantum Hall effect (QHE) is commonly associated with an electric field approaching the inter-Landau-level (LL) Zener field, the ratio of the Landau gap and the cyclotron radius. Eluded in semiconducting heterostructures, in spite of extensive investigation, the intrinsic Zener limi...
| Main Authors: | , , , , , , , , , , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
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2018
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| Online Access: | https://hdl.handle.net/10356/89661 http://hdl.handle.net/10220/46320 |
| _version_ | 1811691756179161088 |
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| author | Yang, W. Graef, H. Lu, X. Zhang, G. Taniguchi, T. Watanabe, K. Bachtold, A. Teo, Edwin Hang Tong Baudin, A. Bocquillon, E. Fève, G. Berroir, J-M. Carpentier, D. Goerbig, M. O. Plaçais, B. |
| author2 | School of Electrical and Electronic Engineering |
| author_facet | School of Electrical and Electronic Engineering Yang, W. Graef, H. Lu, X. Zhang, G. Taniguchi, T. Watanabe, K. Bachtold, A. Teo, Edwin Hang Tong Baudin, A. Bocquillon, E. Fève, G. Berroir, J-M. Carpentier, D. Goerbig, M. O. Plaçais, B. |
| author_sort | Yang, W. |
| collection | NTU |
| description | Breakdown of the quantum Hall effect (QHE) is commonly associated with an electric field approaching the inter-Landau-level (LL) Zener field, the ratio of the Landau gap and the cyclotron radius. Eluded in semiconducting heterostructures, in spite of extensive investigation, the intrinsic Zener limit is reported here using high-mobility bilayer graphene and high-frequency current noise. We show that collective excitations arising from electron-electron interactions are essential. Beyond a noiseless ballistic QHE regime a large super-Poissonian shot noise signals the breakdown via inter-LL scattering. The breakdown is ultimately limited by collective excitations in a regime where phonon and impurity scattering are quenched. The breakdown mechanism can be described by a Landau critical velocity as it bears strong similarities with the roton mechanism of superfluids. In addition, we show that breakdown is a precursor of an electric-field induced QHE-metal transition. |
| first_indexed | 2024-10-01T06:24:57Z |
| format | Journal Article |
| id | ntu-10356/89661 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:24:57Z |
| publishDate | 2018 |
| record_format | dspace |
| spelling | ntu-10356/896612020-03-07T13:57:22Z Landau velocity for collective quantum hall breakdown in bilayer graphene Yang, W. Graef, H. Lu, X. Zhang, G. Taniguchi, T. Watanabe, K. Bachtold, A. Teo, Edwin Hang Tong Baudin, A. Bocquillon, E. Fève, G. Berroir, J-M. Carpentier, D. Goerbig, M. O. Plaçais, B. School of Electrical and Electronic Engineering CNRS International NTU THALES Research Alliances Electromagnetic Wave Scattering DRNTU::Engineering::Electrical and electronic engineering Electric Fields Breakdown of the quantum Hall effect (QHE) is commonly associated with an electric field approaching the inter-Landau-level (LL) Zener field, the ratio of the Landau gap and the cyclotron radius. Eluded in semiconducting heterostructures, in spite of extensive investigation, the intrinsic Zener limit is reported here using high-mobility bilayer graphene and high-frequency current noise. We show that collective excitations arising from electron-electron interactions are essential. Beyond a noiseless ballistic QHE regime a large super-Poissonian shot noise signals the breakdown via inter-LL scattering. The breakdown is ultimately limited by collective excitations in a regime where phonon and impurity scattering are quenched. The breakdown mechanism can be described by a Landau critical velocity as it bears strong similarities with the roton mechanism of superfluids. In addition, we show that breakdown is a precursor of an electric-field induced QHE-metal transition. Published version 2018-10-15T08:24:54Z 2019-12-06T17:30:36Z 2018-10-15T08:24:54Z 2019-12-06T17:30:36Z 2018 Journal Article Yang, W., Graef, H., Lu, X., Zhang, G., Taniguchi, T., Watanabe, K., . . . Plaçais, B. (2018). Landau Velocity for Collective Quantum Hall Breakdown in Bilayer Graphene. Physical Review Letters, 121(13), 136804-. doi:10.1103/PhysRevLett.121.136804 0031-9007 https://hdl.handle.net/10356/89661 http://hdl.handle.net/10220/46320 10.1103/PhysRevLett.121.136804 en Physical Review Letters © 2018 American Physical Society. This paper was published in Physical Review Letters and is made available as an electronic reprint (preprint) with permission of American Physical Society. The published version is available at: [http://dx.doi.org/10.1103/PhysRevLett.121.136804]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law. 6 p. application/pdf |
| spellingShingle | Electromagnetic Wave Scattering DRNTU::Engineering::Electrical and electronic engineering Electric Fields Yang, W. Graef, H. Lu, X. Zhang, G. Taniguchi, T. Watanabe, K. Bachtold, A. Teo, Edwin Hang Tong Baudin, A. Bocquillon, E. Fève, G. Berroir, J-M. Carpentier, D. Goerbig, M. O. Plaçais, B. Landau velocity for collective quantum hall breakdown in bilayer graphene |
| title | Landau velocity for collective quantum hall breakdown in bilayer graphene |
| title_full | Landau velocity for collective quantum hall breakdown in bilayer graphene |
| title_fullStr | Landau velocity for collective quantum hall breakdown in bilayer graphene |
| title_full_unstemmed | Landau velocity for collective quantum hall breakdown in bilayer graphene |
| title_short | Landau velocity for collective quantum hall breakdown in bilayer graphene |
| title_sort | landau velocity for collective quantum hall breakdown in bilayer graphene |
| topic | Electromagnetic Wave Scattering DRNTU::Engineering::Electrical and electronic engineering Electric Fields |
| url | https://hdl.handle.net/10356/89661 http://hdl.handle.net/10220/46320 |
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