Tomographic mapping of the hidden dimension in quasi-particle interference

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

doi:10.1038/s41467-021-27082-1

Tomographic mapping of the hidden dimension in quasi-particle interference

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^*

^*Corresponding author for this work

Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

8 Downloads (Pure)

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.

Original language	English
Article number	6739
Number of pages	8
Journal	Nature Communications
Volume	12
Issue number	1
DOIs	https://doi.org/10.1038/s41467-021-27082-1
Publication status	Published - 18 Nov 2021

Bibliographical note

Funding Information:
C.A.M. acknowledges funding from EPSRC through EP/L015110/1, and C.T. and P.W. through EP/R031924/1. P.W. and T.R. are grateful for support through SARIRF funding by the University of St Andrews. I.M. acknowledges studentship support through the International Max Planck Research School for Chemistry and Physics of Quantum Materials. M.D.W., A.R., and P.D.C.K. acknowledge funding from The Leverhulme Trust. F.M. and P.D.C.K. acknowledge funding from the European Research Council (through the ERC-714193-QUESTDO project). We thank Elettra synchrotron for access to the APE-LE beamline, which contributed to the results presented here, and we gratefully acknowledge Chiara Bigi and Ivana Vobornik for technical assistance. F.M. and P.D.C.K. are grateful for support by the project CALIPSOplus under Grant Agreement 730872 from the EU Framework Programme for Research and Innovation HORIZON 2020. P.D.C.K. acknowledges support from the UK Royal Society.

Publisher Copyright:
© 2021, The Author(s).

ASJC Scopus subject areas

General Chemistry
General Biochemistry,Genetics and Molecular Biology
General Physics and Astronomy

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Cite this

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title = "Tomographic mapping of the hidden dimension in quasi-particle interference",

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.",

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note = "Funding Information: C.A.M. acknowledges funding from EPSRC through EP/L015110/1, and C.T. and P.W. through EP/R031924/1. P.W. and T.R. are grateful for support through SARIRF funding by the University of St Andrews. I.M. acknowledges studentship support through the International Max Planck Research School for Chemistry and Physics of Quantum Materials. M.D.W., A.R., and P.D.C.K. acknowledge funding from The Leverhulme Trust. F.M. and P.D.C.K. acknowledge funding from the European Research Council (through the ERC-714193-QUESTDO project). We thank Elettra synchrotron for access to the APE-LE beamline, which contributed to the results presented here, and we gratefully acknowledge Chiara Bigi and Ivana Vobornik for technical assistance. F.M. and P.D.C.K. are grateful for support by the project CALIPSOplus under Grant Agreement 730872 from the EU Framework Programme for Research and Innovation HORIZON 2020. P.D.C.K. acknowledges support from the UK Royal Society. Publisher Copyright: {\textcopyright} 2021, The Author(s).",

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AU - Watson, M. D.

AU - Mazzola, F.

AU - Rajan, A.

AU - Raub, T. D.

AU - King, P. D.C.

AU - Wahl, P.

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N2 - 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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Tomographic mapping of the hidden dimension in quasi-particle interference

Abstract

Bibliographical note

ASJC Scopus subject areas

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