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  Tomographic mapping of the hidden dimension in quasi-particle interference

Marques, C. A., Bahramy, M. S., Trainer, C., Marković, I., Watson, M. D., Mazzola, F., et al. (2021). Tomographic mapping of the hidden dimension in quasi-particle interference. Nature Communications, 12: 6739, pp. 1-8. doi:10.1038/s41467-021-27082-1.

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Marques, C. A.1, Author
Bahramy, M. S.1, Author
Trainer, C.1, Author
Marković, Igor2, Author              
Watson , M. D.1, Author
Mazzola, F.1, Author
Rajan, A.1, Author
Raub, T. D.1, Author
King, P. D. C.1, Author
Wahl, P.1, Author
Affiliations:
1External Organizations, ou_persistent22              
2Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863462              

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 Abstract: Quasiparticle interference is a powerful tool for characterization of electronic structure which leverages scattering off defects; however, it is limited to quasi two-dimensional materials. Here, the authors demonstrate a method for reconstructing electronic structure of three-dimensional materials from quasiparticle interference data. 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.

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Language(s): eng - English
 Dates: 2021-11-182021-11-18
 Publication Status: Published in print
 Pages: -
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 Table of Contents: -
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Title: Nature Communications
  Abbreviation : Nat. Commun.
Source Genre: Journal
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Publ. Info: London : Nature Publishing Group
Pages: - Volume / Issue: 12 Sequence Number: 6739 Start / End Page: 1 - 8 Identifier: ISSN: 2041-1723
CoNE: https://pure.mpg.de/cone/journals/resource/2041-1723