Article Gate-Tunable Band Edge in Few-Layer MoS2

Michele Masseroni ; Isaac Soltero ; James G. McHugh ; Igor Rozhansky ; Xue Li ; Alexander Schmidhuber ; Markus Niese ; Takashi Taniguchi SAMURAI ORCID (National Institute for Materials Science) ; Kenji Watanabe SAMURAI ORCID (National Institute for Materials Science) ; Vladimir I. Fal’ko ; Thomas Ihn ; Klaus Ensslin

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Michele Masseroni, Isaac Soltero, James G. McHugh, Igor Rozhansky, Xue Li, Alexander Schmidhuber, Markus Niese, Takashi Taniguchi, Kenji Watanabe, Vladimir I. Fal’ko, Thomas Ihn, Klaus Ensslin. Gate-Tunable Band Edge in Few-Layer MoS2. Nano Letters. 2025, 25 (26), 10472-10477. https://doi.org/10.1021/acs.nanolett.5c01998

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(abstract)

The conduction band minima of multilayer molybdenum disulfide (MoS2) are expected to be centered at the Q point (midway between the Γ and K points) of the hexagonal Brillouin zone. In this study, we conduct magnetotransport experiments on four-layer MoS2, revealing highly tunable gate-induced K and Q valley populations. By combining our experimental results with a hybrid k · p tight-binding model that accounts for interlayer screening effects in a self-consistent manner, we demonstrate that the conduction band minima of four-layer MoS2 at low gate bias are indeed centered at the Q points. However, as in typical experiments higher gate voltages are applied, charge accumulation in the layer adjacent to the positive gate electrode leads to a transition of the band edge from the Q points to the K points. Additionally, we extend our model to bilayer and three-layer MoS2, successfully reconciling previously reported discrepancies between experimental data and density functional theory calculations.

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Keyword: MoS2
, band edge, gate-tunable


Date published: 2025-07-02

Publisher: American Chemical Society (ACS)

Journal:

  • Nano Letters (ISSN: 15306984) vol. 25 issue. 26 p. 10472-10477

Funding:

  • Engineering and Physical Sciences Research Council EP/S030719/1
  • Engineering and Physical Sciences Research Council EP/V007033/1
  • Eidgen?ssische Technische Hochschule Z?rich
  • Leverhulme Trust LTRSF24/100044
  • University of Manchester
  • Ministry of Education, Culture, Sports, Science and Technology
  • Core Research for Evolutional Science and Technology JPMJCR24A5
  • National Center of Competence in Research Quantum Science and Technology
  • Japan Society for the Promotion of Science 21H05233
  • Japan Society for the Promotion of Science 23H02052
  • Graphene Flagship
  • H2020 European Research Council 95154
  • Lloyd's Register Foundation

Manuscript type: Publisher's version (Version of record)

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First published URL: https://doi.org/10.1021/acs.nanolett.5c01998

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Updated at: 2026-02-18 08:30:19 +0900

Published on MDR: 2026-02-17 17:57:19 +0900

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