IDEAS home Printed from https://ideas.repec.org/a/nat/natcom/v14y2023i1d10.1038_s41467-023-40035-0.html
   My bibliography  Save this article

Surface coupling in Bi2Se3 ultrathin films by screened Coulomb interaction

Author

Listed:
  • Jia-nan Liu

    (Institute of Physics Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Xu Yang

    (Institute of Physics Chinese Academy of Sciences
    Songshan Lake Materials Laboratory)

  • Haopu Xue

    (Institute of Physics Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Xue-song Gai

    (Institute of Physics Chinese Academy of Sciences)

  • Rui Sun

    (Institute of Physics Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Yang Li

    (Institute of Physics Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Zi-Zhao Gong

    (Institute of Physics Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Na Li

    (Institute of Physics Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Zong-Kai Xie

    (Institute of Physics Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Wei He

    (Institute of Physics Chinese Academy of Sciences)

  • Xiang-Qun Zhang

    (Institute of Physics Chinese Academy of Sciences)

  • Desheng Xue

    (Lanzhou University)

  • Zhao-Hua Cheng

    (Institute of Physics Chinese Academy of Sciences
    University of Chinese Academy of Sciences
    Songshan Lake Materials Laboratory)

Abstract

Single-particle band theory has been very successful in describing the band structure of topological insulators. However, with decreasing thickness of topological insulator thin films, single-particle band theory is insufficient to explain their band structures and transport properties due to the existence of top and bottom surface-state coupling. Here, we reconstruct this coupling with an equivalently screened Coulomb interaction in Bi2Se3 ultrathin films. The thickness-dependent position of the Dirac point and the magnitude of the mass gap are discussed in terms of the Hartree approximation and the self-consistent gap equation. We find that for thicknesses below 6 quintuple layers, the magnitude of the mass gap is in good agreement with the experimental results. Our work provides a more accurate means of describing and predicting the behaviour of quasi-particles in ultrathin topological insulator films and stacked topological systems.

Suggested Citation

  • Jia-nan Liu & Xu Yang & Haopu Xue & Xue-song Gai & Rui Sun & Yang Li & Zi-Zhao Gong & Na Li & Zong-Kai Xie & Wei He & Xiang-Qun Zhang & Desheng Xue & Zhao-Hua Cheng, 2023. "Surface coupling in Bi2Se3 ultrathin films by screened Coulomb interaction," Nature Communications, Nature, vol. 14(1), pages 1-6, December.
    • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-40035-0
    DOI: 10.1038/s41467-023-40035-0
    as

    Download full text from publisher

    File URL: https://www.nature.com/articles/s41467-023-40035-0
    File Function: Abstract
    Download Restriction: no
    File URL: https://libkey.io/10.1038/s41467-023-40035-0?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    References listed on IDEAS

    as
    1. A. R. Mellnik & J. S. Lee & A. Richardella & J. L. Grab & P. J. Mintun & M. H. Fischer & A. Vaezi & A. Manchon & E.-A. Kim & N. Samarth & D. C. Ralph, 2014. "Spin-transfer torque generated by a topological insulator," Nature, Nature, vol. 511(7510), pages 449-451, July.
    Full references (including those not matched with items on IDEAS)

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Haiyu Wang & Hao Wu & Jie Zhang & Yingjie Liu & Dongdong Chen & Chandan Pandey & Jialiang Yin & Dahai Wei & Na Lei & Shuyuan Shi & Haichang Lu & Peng Li & Albert Fert & Kang L. Wang & Tianxiao Nie & W, 2023. "Room temperature energy-efficient spin-orbit torque switching in two-dimensional van der Waals Fe3GeTe2 induced by topological insulators," Nature Communications, Nature, vol. 14(1), pages 1-9, December.
    2. Lijun Zhu & Daniel C. Ralph, 2023. "Strong variation of spin-orbit torques with relative spin relaxation rates in ferrimagnets," Nature Communications, Nature, vol. 14(1), pages 1-9, December.
    3. Yong Xu & Fan Zhang & Albert Fert & Henri-Yves Jaffres & Yongshan Liu & Renyou Xu & Yuhao Jiang & Houyi Cheng & Weisheng Zhao, 2024. "Orbitronics: light-induced orbital currents in Ni studied by terahertz emission experiments," Nature Communications, Nature, vol. 15(1), pages 1-7, December.
    4. Kouta Kondou & Hua Chen & Takahiro Tomita & Muhammad Ikhlas & Tomoya Higo & Allan H. MacDonald & Satoru Nakatsuji & YoshiChika Otani, 2021. "Giant field-like torque by the out-of-plane magnetic spin Hall effect in a topological antiferromagnet," Nature Communications, Nature, vol. 12(1), pages 1-8, December.
    5. Kuan-Sen Lin & Giandomenico Palumbo & Zhaopeng Guo & Yoonseok Hwang & Jeremy Blackburn & Daniel P. Shoemaker & Fahad Mahmood & Zhijun Wang & Gregory A. Fiete & Benjamin J. Wieder & Barry Bradlyn, 2024. "Spin-resolved topology and partial axion angles in three-dimensional insulators," Nature Communications, Nature, vol. 15(1), pages 1-17, December.
    6. Yuki Hibino & Tomohiro Taniguchi & Kay Yakushiji & Akio Fukushima & Hitoshi Kubota & Shinji Yuasa, 2021. "Giant charge-to-spin conversion in ferromagnet via spin-orbit coupling," Nature Communications, Nature, vol. 12(1), pages 1-7, December.
    7. Andrey Polyakov & Katayoon Mohseni & Roberto Felici & Christian Tusche & Ying-Jun Chen & Vitaly Feyer & Jochen Geck & Tobias Ritschel & Arthur Ernst & Juan Rubio-Zuazo & German R. Castro & Holger L. M, 2022. "Fermi surface chirality induced in a TaSe2 monosheet formed by a Ta/Bi2Se3 interface reaction," Nature Communications, Nature, vol. 13(1), pages 1-8, December.
    8. Hao Wu & Aitian Chen & Peng Zhang & Haoran He & John Nance & Chenyang Guo & Julian Sasaki & Takanori Shirokura & Pham Nam Hai & Bin Fang & Seyed Armin Razavi & Kin Wong & Yan Wen & Yinchang Ma & Guoqi, 2021. "Magnetic memory driven by topological insulators," Nature Communications, Nature, vol. 12(1), pages 1-7, December.

    More about this item

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-40035-0. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Sonal Shukla or Springer Nature Abstracting and Indexing (email available below). General contact details of provider: http://www.nature.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.