IDEAS home Printed from https://ideas.repec.org/a/nat/natcom/v16y2025i1d10.1038_s41467-025-60020-z.html
   My bibliography  Save this article

Kramers nodal lines in intercalated TaS2 superconductors

Author

Listed:
  • Yichen Zhang

    (Rice University)

  • Yuxiang Gao

    (Rice University)

  • Aki Pulkkinen

    (University of West Bohemia)

  • Xingyao Guo

    (Hong Kong University of Science and Technology, Clear Water Bay)

  • Jianwei Huang

    (Rice University)

  • Yucheng Guo

    (Rice University)

  • Ziqin Yue

    (Rice University
    Smalley-Curl Institute, Rice University)

  • Ji Seop Oh

    (Rice University
    University of California, Berkeley)

  • Alex Moon

    (Tallahassee
    Florida State University)

  • Mohamed Oudah

    (University of British Columbia, Vancouver)

  • Xue-Jian Gao

    (Hong Kong University of Science and Technology, Clear Water Bay)

  • Alberto Marmodoro

    (University of West Bohemia)

  • Alexei Fedorov

    (Lawrence Berkeley National Laboratory, Berkeley)

  • Sung-Kwan Mo

    (Lawrence Berkeley National Laboratory, Berkeley)

  • Makoto Hashimoto

    (SLAC National Accelerator Laboratory)

  • Donghui Lu

    (SLAC National Accelerator Laboratory)

  • Anil Rajapitamahuni

    (Brookhaven National Lab)

  • Elio Vescovo

    (Brookhaven National Lab)

  • Junichiro Kono

    (Rice University
    Rice University
    Rice University
    Rice University)

  • Alannah M. Hallas

    (University of British Columbia, Vancouver
    University of British Columbia, Vancouver
    Toronto)

  • Robert J. Birgeneau

    (University of California, Berkeley
    Lawrence Berkeley National Laboratory, Berkeley)

  • Luis Balicas

    (Tallahassee
    Florida State University)

  • Ján Minár

    (University of West Bohemia)

  • Pavan Hosur

    (University of Houston)

  • Kam Tuen Law

    (Hong Kong University of Science and Technology, Clear Water Bay)

  • Emilia Morosan

    (Rice University
    Rice University
    Rice University)

  • Ming Yi

    (Rice University
    Rice University
    Rice University)

Abstract

Kramers degeneracy is one fundamental embodiment of the quantum mechanical nature of particles with half-integer spin under time reversal symmetry. Under the chiral and noncentrosymmetric achiral crystalline symmetries, Kramers degeneracy emerges respectively as topological quasiparticles of Weyl fermions and Kramers nodal lines (KNLs), anchoring the Berry phase-related physics of electrons. However, an experimental demonstration for ideal KNLs well isolated at the Fermi level is lacking. Here, we establish a class of noncentrosymmetric achiral intercalated transition metal dichalcogenide superconductors with large Ising-type spin-orbit coupling, represented by InxTaS2, to host an ideal KNL phase. We provide evidence from angle-resolved photoemission spectroscopy with spin resolution, angle-dependent quantum oscillation measurements, and ab-initio calculations. Our work not only provides a realistic platform for realizing and tuning KNLs in layered materials, but also paves the way for exploring the interplay between KNLs and superconductivity, as well as applications pertaining to spintronics, valleytronics, and nonlinear transport.

Suggested Citation

  • Yichen Zhang & Yuxiang Gao & Aki Pulkkinen & Xingyao Guo & Jianwei Huang & Yucheng Guo & Ziqin Yue & Ji Seop Oh & Alex Moon & Mohamed Oudah & Xue-Jian Gao & Alberto Marmodoro & Alexei Fedorov & Sung-K, 2025. "Kramers nodal lines in intercalated TaS2 superconductors," Nature Communications, Nature, vol. 16(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:16:y:2025:i:1:d:10.1038_s41467-025-60020-z
    DOI: 10.1038/s41467-025-60020-z
    as

    Download full text from publisher

    File URL: https://www.nature.com/articles/s41467-025-60020-z
    File Function: Abstract
    Download Restriction: no
    File URL: https://libkey.io/10.1038/s41467-025-60020-z?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
    ---><---

    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:16:y:2025:i:1:d:10.1038_s41467-025-60020-z. 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.

    We have no bibliographic references for this item. You can help adding them by using 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.