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Thermally stable quantum Hall effect in a gated ferroelectric-graphene heterostructure

Dey, Anubhab; Cottam, Nathan; Makarovskiy, Oleg; Yan, Wenjing; Mišeikis, Vaidotas; Coletti, Camilla; Kerfoot, James; Korolkov, Vladimir; Eaves, Laurence; Linnartz, Jasper F.; Kool, Arwin; Wiedmann, Steffen; Patanè, Amalia

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Anubhab Dey

Anne Mclaren Research Fellowship

Vaidotas Mišeikis

Camilla Coletti

James Kerfoot

Vladimir Korolkov

Jasper F. Linnartz

Arwin Kool

Steffen Wiedmann


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.


Dey, A., Cottam, N., Makarovskiy, O., Yan, W., Mišeikis, V., Coletti, C., …Patanè, A. (2023). Thermally stable quantum Hall effect in a gated ferroelectric-graphene heterostructure. Communications Physics, 6, Article 216.

Journal Article Type Article
Acceptance Date Aug 9, 2023
Online Publication Date Aug 17, 2023
Publication Date Aug 17, 2023
Deposit Date Aug 9, 2023
Publicly Available Date Aug 23, 2023
Journal Communications Physics
Electronic ISSN 2399-3650
Publisher Nature Publishing Group
Peer Reviewed Peer Reviewed
Volume 6
Article Number 216
Keywords General Physics and Astronomy
Public URL
Publisher URL
Additional Information Received: 12 June 2023; Accepted: 9 August 2023; First Online: 17 August 2023; : The authors declare no competing interests.


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