Thermally stable quantum Hall effect in a gated ferroelectric-graphene heterostructure
Abstract The quantum Hall effect is widely used for the investigation of fundamental phenomena, ranging from topological phases to composite fermions. In particular, the discovery of a room temperature resistance quantum in graphene is significant for compact resistance standards that can operate ab...
| Main Authors: | , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2023-08-01
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| Series: | Communications Physics |
| Online Access: | https://doi.org/10.1038/s42005-023-01340-8 |
| _version_ | 1827710664735457280 |
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| author | Anubhab Dey Nathan Cottam Oleg Makarovskiy Wenjing Yan Vaidotas Mišeikis Camilla Coletti James Kerfoot Vladimir Korolkov Laurence Eaves Jasper F. Linnartz Arwin Kool Steffen Wiedmann Amalia Patanè |
| author_facet | Anubhab Dey Nathan Cottam Oleg Makarovskiy Wenjing Yan Vaidotas Mišeikis Camilla Coletti James Kerfoot Vladimir Korolkov Laurence Eaves Jasper F. Linnartz Arwin Kool Steffen Wiedmann Amalia Patanè |
| author_sort | Anubhab Dey |
| collection | DOAJ |
| description | Abstract The quantum Hall effect is widely used for the investigation of fundamental phenomena, ranging from topological phases to composite fermions. In particular, the discovery of a room temperature resistance quantum in graphene is significant for compact resistance standards that can operate above cryogenic temperatures. However, this requires large magnetic fields that are accessible only in a few high magnetic field facilities. Here, we report on the quantum Hall effect in graphene encapsulated by the ferroelectric insulator CuInP2S6. Electrostatic gating of the graphene channel enables the Fermi energy to be tuned so that electrons in the localized states of the insulator are in equilibrium with the current-carrying, delocalized states of graphene. Due to the presence of strongly bound states in this hybrid system, a quantum Hall plateau is observed over a wide range of temperatures in relatively modest magnetic fields. |
| first_indexed | 2024-03-10T17:42:01Z |
| format | Article |
| id | doaj.art-b8a09ea79d50466ea98dcbf827dbc7a8 |
| institution | Directory Open Access Journal |
| issn | 2399-3650 |
| language | English |
| last_indexed | 2024-03-10T17:42:01Z |
| publishDate | 2023-08-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Communications Physics |
| spelling | doaj.art-b8a09ea79d50466ea98dcbf827dbc7a82023-11-20T09:39:54ZengNature PortfolioCommunications Physics2399-36502023-08-01611910.1038/s42005-023-01340-8Thermally stable quantum Hall effect in a gated ferroelectric-graphene heterostructureAnubhab Dey0Nathan Cottam1Oleg Makarovskiy2Wenjing Yan3Vaidotas Mišeikis4Camilla Coletti5James Kerfoot6Vladimir Korolkov7Laurence Eaves8Jasper F. Linnartz9Arwin Kool10Steffen Wiedmann11Amalia Patanè12School of Physics and Astronomy, University of NottinghamSchool of Physics and Astronomy, University of NottinghamSchool of Physics and Astronomy, University of NottinghamSchool of Physics and Astronomy, University of NottinghamCenter for Nanotechnology Innovation @NEST, Istituto Italiano di TecnologiaCenter for Nanotechnology Innovation @NEST, Istituto Italiano di TecnologiaPark Systems UK Ltd, Medicity NottinghamPark Systems UK Ltd, Medicity NottinghamSchool of Physics and Astronomy, University of NottinghamHigh Field Magnet Laboratory (HFML –EMFL), Radboud UniversityHigh Field Magnet Laboratory (HFML –EMFL), Radboud UniversityHigh Field Magnet Laboratory (HFML –EMFL), Radboud UniversitySchool of Physics and Astronomy, University of NottinghamAbstract The quantum Hall effect is widely used for the investigation of fundamental phenomena, ranging from topological phases to composite fermions. In particular, the discovery of a room temperature resistance quantum in graphene is significant for compact resistance standards that can operate above cryogenic temperatures. However, this requires large magnetic fields that are accessible only in a few high magnetic field facilities. Here, we report on the quantum Hall effect in graphene encapsulated by the ferroelectric insulator CuInP2S6. Electrostatic gating of the graphene channel enables the Fermi energy to be tuned so that electrons in the localized states of the insulator are in equilibrium with the current-carrying, delocalized states of graphene. Due to the presence of strongly bound states in this hybrid system, a quantum Hall plateau is observed over a wide range of temperatures in relatively modest magnetic fields.https://doi.org/10.1038/s42005-023-01340-8 |
| spellingShingle | Anubhab Dey Nathan Cottam Oleg Makarovskiy Wenjing Yan Vaidotas Mišeikis Camilla Coletti James Kerfoot Vladimir Korolkov Laurence Eaves Jasper F. Linnartz Arwin Kool Steffen Wiedmann Amalia Patanè Thermally stable quantum Hall effect in a gated ferroelectric-graphene heterostructure Communications Physics |
| title | Thermally stable quantum Hall effect in a gated ferroelectric-graphene heterostructure |
| title_full | Thermally stable quantum Hall effect in a gated ferroelectric-graphene heterostructure |
| title_fullStr | Thermally stable quantum Hall effect in a gated ferroelectric-graphene heterostructure |
| title_full_unstemmed | Thermally stable quantum Hall effect in a gated ferroelectric-graphene heterostructure |
| title_short | Thermally stable quantum Hall effect in a gated ferroelectric-graphene heterostructure |
| title_sort | thermally stable quantum hall effect in a gated ferroelectric graphene heterostructure |
| url | https://doi.org/10.1038/s42005-023-01340-8 |
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