# High-Mobility Compensated Semimetals, Orbital Magnetization, and Umklapp Scattering in Bilayer Graphene Moiré Superlattices https://mdr.nims.go.jp/datasets/d4277b26-59b3-4e1e-8d4f-2208bc8b0885 ## File - [2024A00527G_ACS_Nano_Shilov.pdf](https://mdr.nims.go.jp/filesets/05904446-1595-4bb4-b5ad-7b8b5513cbbd/download) ([Detail](https://mdr.nims.go.jp/filesets/05904446-1595-4bb4-b5ad-7b8b5513cbbd.md)) ## Id d4277b26-59b3-4e1e-8d4f-2208bc8b0885 ## Local identifier ## Visibility open_to_public ## State published ## Created at 2025-07-28T01:09:45.077703Z ## Updated at 2025-07-29T03:30:20.719308Z ## Published at 2025-07-29T03:21:26.678881Z ## Doi ## First published url https://doi.org/10.1021/acsnano.3c13212 ## Date published 2024-05-07 ## Recorded date published 2024-5-7 ## Resource type journal_article ## Manuscript type accepted_manuscript ## Collection ## Title - title: High-Mobility Compensated Semimetals, Orbital Magnetization, and Umklapp Scattering in Bilayer Graphene Moiré Superlattices title_type: original lang: en ## Description - description: "Twist-controlled moiré superlattices (MS) have emerged as a versatile platform for realizing artificial systems with complex electronic spectra. The combination of Bernal-stacked bilayer graphene (BLG) and hexagonal boron nitride (hBN) can give rise to an interesting MS, that has recently featured a set of unexpected behaviors, such as unconventional ferroelectricity and the electronic ratchet effect. Yet, the understanding of the electronic properties of BLG/hBN MS has, at present, remained fairly limited. Here, we combine magneto-transport and low-energy sub-THz excitation to gain insights into the properties of this MS. We demonstrate that the alignment between BLG and hBN\r\ncrystal lattices results in the emergence of compensated semimetals at some integer fillings of the moiré bands, separated by van Hove singularities where Lifshitz transition occurs. A particularly pronounced semimetal develops when eight holes reside in the moiré unit cell, where coexisting high-mobility electron and hole systems feature strong magnetoresistance reaching 2350% already at B = 0.25 T. Next, by measuring the THz-driven Nernst effect in remote bands, we observe valley splitting, indicating an orbital magnetization characterized by a strongly enhanced effective gv-factor of 340. Finally, using THz photoresistance measurements, we show that the high-temperature conductivity of the BLG/hBN MS is limited by electron-electron umklapp processes. Our multi-faceted analysis introduces THz-driven magnetotransport as a convenient tool to probe the band structure and interaction effects in van der Waals materials and provides a comprehensive understanding of the BLG/hBN MS." description_type: abstract lang: en ## Creator - name: Artur L. Shilov role: author - name: Mikhail A. Kashchenko role: author - name: Pierre A. Pantaleón Peralta role: author - name: Yibo Wang role: author - name: Mikhail Kravtsov role: author - name: Andrei Kudriashov role: author - name: Zhen Zhan role: author - name: Takashi Taniguchi role: author orcid: https://orcid.org/0000-0002-1467-3105 organization: National Institute for Materials Science - name: Kenji Watanabe role: author orcid: https://orcid.org/0000-0003-3701-8119 organization: National Institute for Materials Science - name: Sergey Slizovskiy role: author - name: Kostya S. Novoselov role: author - name: Vladimir I. Fal’ko role: author - name: Francisco Guinea role: author - name: Denis A. Bandurin role: author ## Contact agent ## Publisher organization: American Chemical Society (ACS) ## Managing organization ## Keyword - subject: Moiré Superlattices schema: not_defined - subject: Bilayer Graphene schema: not_defined - subject: Orbital Magnetization schema: not_defined - subject: Compensated Semimetals schema: not_defined - subject: Umklapp Scattering schema: not_defined - subject: Terahertz schema: not_defined ## Rights - description: This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Nano, copyright © 2024 American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acsnano.3c13212. identifier: http://rightsstatements.org/vocab/InC/1.0/ ## Other identifier(s) ## Data origin - data_origin_type: other ## Embargo start_date: 2024-04-22 end_date: 2025-04-22 ## Journal - title: ACS Nano issn: 1936086X volume: '18' issue: '8' start_page: 11769 end_page: 11777 ## Conference ## Related item ## Funding - identifier: PID2022-142162NB-I00 funder_name: Ministerio de Ciencia e Innovaci?n - funder_name: European Regional Development Fund - identifier: '101034431' funder_name: H2020 Marie Sklodowska-Curie Actions - identifier: 20H00354 funder_name: Japan Society for the Promotion of Science - identifier: 21H05233 funder_name: Japan Society for the Promotion of Science - identifier: 23H02052 funder_name: Japan Society for the Promotion of Science - funder_name: Graphene Flagship - funder_name: Lloyd Register Foundation - funder_name: Center for Neurophysics and Neuromorphic Technologies - identifier: EP/S030719/1 funder_name: Engineering and Physical Sciences Research Council - identifier: EP/V007033/1 funder_name: Engineering and Physical Sciences Research Council - identifier: RSRP\R\190000 funder_name: Royal Society - funder_name: European Commission - identifier: M22K3c0106 funder_name: Agency for Science, Technology and Research - funder_name: Ministry of Education, Culture, Sports, Science and Technology - identifier: EDUNC-33-18-279-V12 funder_name: Ministry of Education - Singapore - identifier: T2EP50123-0020 funder_name: Ministry of Education - Singapore - identifier: CEX2020-001039-S/AEI/10.13039/501100011033 funder_name: Ministerio de Ciencia e Innovaci?n ## Instrument ## Instrument operator ## Instrument managing organization ## Measurement method ## Specimen ## Chemical composition ## Structure for specimen ## Structural feature for specimen ## Specific property for specimen ## Process for specimen treatment ## Computational method ## Energy level/transition state ## Software ## Custom property ## Fileset - id: '05904446-1595-4bb4-b5ad-7b8b5513cbbd' filename: 2024A00527G_ACS_Nano_Shilov.pdf content_type: application/pdf size: 21793152 md5: 07a0b48e7885ad4a48b7cd184f8a69bc ## Thumbnail fileset_id: '05904446-1595-4bb4-b5ad-7b8b5513cbbd' filename: 2024A00527G_ACS_Nano_Shilov.pdf