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Tomographic mapping of the hidden dimension in quasi-particle interference

Author

Listed:
  • C. A. Marques

    (University of St Andrews)

  • M. S. Bahramy

    (The University of Manchester)

  • C. Trainer

    (University of St Andrews)

  • I. Marković

    (University of St Andrews
    Max Planck Institute for Chemical Physics of Solids)

  • M. D. Watson

    (University of St Andrews)

  • F. Mazzola

    (University of St Andrews)

  • A. Rajan

    (University of St Andrews)

  • T. D. Raub

    (University of St Andrews)

  • P. D. C. King

    (University of St Andrews)

  • P. Wahl

    (University of St Andrews)

Abstract

Quasiparticle interference (QPI) imaging is well established to study the low-energy electronic structure in strongly correlated electron materials with unrivalled energy resolution. Yet, being a surface-sensitive technique, the interpretation of QPI only works well for anisotropic materials, where the dispersion in the direction perpendicular to the surface can be neglected and the quasiparticle interference is dominated by a quasi-2D electronic structure. Here, we explore QPI imaging of galena, a material with an electronic structure that does not exhibit pronounced anisotropy. We find that the quasiparticle interference signal is dominated by scattering vectors which are parallel to the surface plane however originate from bias-dependent cuts of the 3D electronic structure. We develop a formalism for the theoretical description of the QPI signal and demonstrate how this quasiparticle tomography can be used to obtain information about the 3D electronic structure and orbital character of the bands.

Suggested Citation

  • C. A. Marques & M. S. Bahramy & C. Trainer & I. Marković & M. D. Watson & F. Mazzola & A. Rajan & T. D. Raub & P. D. C. King & P. Wahl, 2021. "Tomographic mapping of the hidden dimension in quasi-particle interference," Nature Communications, Nature, vol. 12(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-27082-1
    DOI: 10.1038/s41467-021-27082-1
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    References listed on IDEAS

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    1. K. Iwaya & Y. Kohsaka & K. Okawa & T. Machida & M. S. Bahramy & T. Hanaguri & T. Sasagawa, 2017. "Full-gap superconductivity in spin-polarised surface states of topological semimetal β-PdBi2," Nature Communications, Nature, vol. 8(1), pages 1-7, December.
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