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Establishing coherent momentum-space electronic states in locally ordered materials

Author

Listed:
  • Samuel T. Ciocys

    (University of California
    Lawrence Berkeley National Laboratory)

  • Quentin Marsal

    (Institut Néel
    Uppsala University)

  • Paul Corbae

    (Lawrence Berkeley National Laboratory
    University of California)

  • Daniel Varjas

    (Stockholm University, AlbaNova University Center
    The Max Planck Institute for the Physics of Complex Systems
    Institute of Physics, Budapest University of Technology and Economics
    IFW Dresden and Würzburg-Dresden Cluster of Excellence ct.qmat)

  • Ellis Kennedy

    (University of California
    Lawrence Berkeley National Laboratory)

  • Mary Scott

    (University of California
    Lawrence Berkeley National Laboratory)

  • Frances Hellman

    (University of California
    Lawrence Berkeley National Laboratory)

  • Adolfo G. Grushin

    (Institut Néel)

  • Alessandra Lanzara

    (University of California
    Lawrence Berkeley National Laboratory)

Abstract

Rich momentum-dependent electronic structure naturally arises in solids with long-range crystalline symmetry. Reliable and scalable quantum technologies rely on materials that are either not perfect crystals or non-crystalline, breaking translational symmetry. This poses the fundamental questions of whether coherent momentum-dependent electronic states can arise without long-range order, and how they can be characterized. Here we investigate Bi2Se3, which exists in crystalline, nanocrystalline, and amorphous forms, allowing direct comparisons between varying degrees of spatial ordering. Through angle-resolved photoemission spectroscopy, we show for the first time momentum-dependent band structure with Fermi surface repetitions in an amorphous solid. The experimental data is complemented by a model that accurately reproduces the vertical, dispersive features as well as the replication at higher momenta in the amorphous form. These results reveal that well-defined real-space length scales are sufficient to produce dispersive band structures, and that photoemission can expose the imprint of these length scales on the electronic structure.

Suggested Citation

  • Samuel T. Ciocys & Quentin Marsal & Paul Corbae & Daniel Varjas & Ellis Kennedy & Mary Scott & Frances Hellman & Adolfo G. Grushin & Alessandra Lanzara, 2024. "Establishing coherent momentum-space electronic states in locally ordered materials," Nature Communications, Nature, vol. 15(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-51953-y
    DOI: 10.1038/s41467-024-51953-y
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    References listed on IDEAS

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    1. Chee-Tat Toh & Hongji Zhang & Junhao Lin & Alexander S. Mayorov & Yun-Peng Wang & Carlo M. Orofeo & Darim Badur Ferry & Henrik Andersen & Nurbek Kakenov & Zenglong Guo & Irfan Haider Abidi & Hunter Si, 2020. "Synthesis and properties of free-standing monolayer amorphous carbon," Nature, Nature, vol. 577(7789), pages 199-203, January.
    2. Sae Hee Ryu & Minjae Huh & Do Yun Park & Chris Jozwiak & Eli Rotenberg & Aaron Bostwick & Keun Su Kim, 2021. "Pseudogap in a crystalline insulator doped by disordered metals," Nature, Nature, vol. 596(7870), pages 68-73, August.
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