Domain Boundary Formation Within an Intercalated Pb Monolayer Featuring Charge‐Neutral Epitaxial Graphene

Advanced Materials Interfaces, vol. 10

Abstract

Abstract The synthesis of new graphene‐based quantum materials by intercalation is an auspicious approach. However, an accompanying proximity coupling depends crucially on the structural details of the new heterostructure. It is studied in detail the Pb monolayer structure after intercalation into the graphene buffer layer on the SiC(0001) interface by means of photoelectron spectroscopy, x‐ray standing waves, and scanning tunneling microscopy. A coherent fraction close to unity proves the formation of a flat Pb monolayer on the SiC surface. An interlayer distance of 3.67 Å to the suspended graphene underlines the formation of a truly van der Waals heterostructure. The 2D Pb layer reveals a quasi ten‐fold periodicity due to the formation of a grain boundary network, ensuring the saturation of the Si surface bonds. Moreover, the densely‐packed Pb layer also efficiently minimizes the doping influence by the SiC substrate, both from the surface dangling bonds and the SiC surface polarization, giving rise to charge‐neutral monolayer graphene. The observation of a long‐ranged () reconstruction on the graphene lattice at tunneling conditions close to Fermi energy is most likely a result of a nesting condition to be perfectly fulfilled.

Authors 22

1. Philip Schädlich

   Chemnitz University of Technology

   Affiliation as printed

   Center for Materials Architectures and Integration of Nano Membranes (MAIN) Technische Universität Chemnitz Rosenbergstr. 6 09126 Chemnitz Germany

   Technische Physik Institut für Physik Technische Universität Chemnitz Reichenhainer Str. 70 09126 Chemnitz Germany

2. Chitran Ghosal

   Chemnitz University of Technology

   Affiliation as printed

   Analytik an Festkörperoberflächen Institut für Physik Technische Universität Chemnitz Reichenhainer Str. 70 09126 Chemnitz Germany

3. Monja Stettner Aachen Experimentalphysik IV A

   Forschungszentrum Jülich · Jülich Aachen Research Alliance · RWTH Aachen University

   Affiliation as printed

   Experimentalphysik IV A RWTH Aachen University 52074 Aachen Germany

   Jülich Aachen Research Alliance (JARA) Fundamentals of Future Information Technology 52425 Jülich Germany

   Peter Grünberg Institut (PGI‐3) Forschungszentrum Jülich 52425 Jülich Germany

   Peter Grünberg Institut (PGI‐3) Forschungszentrum Jülich 52425 Jülich Germany

4. Bharti Matta

   Max Planck Institute for Solid State Research

   Affiliation as printed

   Max‐Planck‐Institut für Festkörperforschung Heisenbergstr. 1 70569 Stuttgart Germany

5. Susanne Wolff

   Chemnitz University of Technology

   Affiliation as printed

   Center for Materials Architectures and Integration of Nano Membranes (MAIN) Technische Universität Chemnitz Rosenbergstr. 6 09126 Chemnitz Germany

   Technische Physik Institut für Physik Technische Universität Chemnitz Reichenhainer Str. 70 09126 Chemnitz Germany

6. Franziska Schölzel

   Chemnitz University of Technology

   Affiliation as printed

   Center for Materials Architectures and Integration of Nano Membranes (MAIN) Technische Universität Chemnitz Rosenbergstr. 6 09126 Chemnitz Germany

   Technische Physik Institut für Physik Technische Universität Chemnitz Reichenhainer Str. 70 09126 Chemnitz Germany

7. Peter Hinnerk Richter

   Chemnitz University of Technology

   Affiliation as printed

   Center for Materials Architectures and Integration of Nano Membranes (MAIN) Technische Universität Chemnitz Rosenbergstr. 6 09126 Chemnitz Germany

   Technische Physik Institut für Physik Technische Universität Chemnitz Reichenhainer Str. 70 09126 Chemnitz Germany

8. Mark Hutter Aachen Experimentalphysik IV A

   Forschungszentrum Jülich · Jülich Aachen Research Alliance · RWTH Aachen University

   Affiliation as printed

   Experimentalphysik IV A RWTH Aachen University 52074 Aachen Germany

   Jülich Aachen Research Alliance (JARA) Fundamentals of Future Information Technology 52425 Jülich Germany

   Peter Grünberg Institut (PGI‐3) Forschungszentrum Jülich 52425 Jülich Germany

   Peter Grünberg Institut (PGI‐3) Forschungszentrum Jülich 52425 Jülich Germany

9. Anja Haags Aachen Experimentalphysik IV A

   Forschungszentrum Jülich · Jülich Aachen Research Alliance · RWTH Aachen University

   Affiliation as printed

   Experimentalphysik IV A RWTH Aachen University 52074 Aachen Germany

   Jülich Aachen Research Alliance (JARA) Fundamentals of Future Information Technology 52425 Jülich Germany

   Peter Grünberg Institut (PGI‐3) Forschungszentrum Jülich 52425 Jülich Germany

   Peter Grünberg Institut (PGI‐3) Forschungszentrum Jülich 52425 Jülich Germany

10. Sabine Wenzel Aachen Experimentalphysik IV A

    Forschungszentrum Jülich · Jülich Aachen Research Alliance · RWTH Aachen University

    Affiliation as printed

    Experimentalphysik IV A RWTH Aachen University 52074 Aachen Germany

    Jülich Aachen Research Alliance (JARA) Fundamentals of Future Information Technology 52425 Jülich Germany

    Peter Grünberg Institut (PGI‐3) Forschungszentrum Jülich 52425 Jülich Germany

    Peter Grünberg Institut (PGI‐3) Forschungszentrum Jülich 52425 Jülich Germany

11. Zamin Q. Mamiyev

    Chemnitz University of Technology

    Affiliation as printed

    Analytik an Festkörperoberflächen Institut für Physik Technische Universität Chemnitz Reichenhainer Str. 70 09126 Chemnitz Germany

12. Julian Koch

    Chemnitz University of Technology

    Affiliation as printed

    Analytik an Festkörperoberflächen Institut für Physik Technische Universität Chemnitz Reichenhainer Str. 70 09126 Chemnitz Germany

13. Serguei Soubatch Aachen Experimentalphysik IV A

    Forschungszentrum Jülich · Jülich Aachen Research Alliance · RWTH Aachen University

    Affiliation as printed

    Experimentalphysik IV A RWTH Aachen University 52074 Aachen Germany

    Jülich Aachen Research Alliance (JARA) Fundamentals of Future Information Technology 52425 Jülich Germany

    Peter Grünberg Institut (PGI‐3) Forschungszentrum Jülich 52425 Jülich Germany

    Peter Grünberg Institut (PGI‐3) Forschungszentrum Jülich 52425 Jülich Germany

14. Philipp Rosenzweig

    Max Planck Institute for Solid State Research

    Affiliation as printed

    Max‐Planck‐Institut für Festkörperforschung Heisenbergstr. 1 70569 Stuttgart Germany

15. Craig Polley

    Lund University · MAX IV Laboratory

    Affiliation as printed

    MAX IV Laboratory Lund University Fotongatan 2 22484 Lund Sweden

    MAX IV Laboratory, Lund University, Fotongatan 2, 22484 Lund, Sweden

16. Frank Stefan Tautz Aachen Experimentalphysik IV A

    Forschungszentrum Jülich · Jülich Aachen Research Alliance · RWTH Aachen University

    Affiliation as printed

    Experimentalphysik IV A RWTH Aachen University 52074 Aachen Germany

    Jülich Aachen Research Alliance (JARA) Fundamentals of Future Information Technology 52425 Jülich Germany

    Peter Grünberg Institut (PGI‐3) Forschungszentrum Jülich 52425 Jülich Germany

    Peter Grünberg Institut (PGI‐3) Forschungszentrum Jülich 52425 Jülich Germany

17. Christian Kumpf Aachen Experimentalphysik IV A

    Forschungszentrum Jülich · Jülich Aachen Research Alliance · RWTH Aachen University

    Affiliation as printed

    Experimentalphysik IV A RWTH Aachen University 52074 Aachen Germany

    Jülich Aachen Research Alliance (JARA) Fundamentals of Future Information Technology 52425 Jülich Germany

    Peter Grünberg Institut (PGI‐3) Forschungszentrum Jülich 52425 Jülich Germany

    Peter Grünberg Institut (PGI‐3) Forschungszentrum Jülich 52425 Jülich Germany

18. Kathrin Küster

    Max Planck Institute for Solid State Research

    Affiliation as printed

    Max‐Planck‐Institut für Festkörperforschung Heisenbergstr. 1 70569 Stuttgart Germany

19. Ulrich Starke

    Max Planck Institute for Solid State Research

    Affiliation as printed

    Max‐Planck‐Institut für Festkörperforschung Heisenbergstr. 1 70569 Stuttgart Germany

20. Thomas K. Seyller

    Chemnitz University of Technology

    Affiliation as printed

    Center for Materials Architectures and Integration of Nano Membranes (MAIN) Technische Universität Chemnitz Rosenbergstr. 6 09126 Chemnitz Germany

    Technische Physik Institut für Physik Technische Universität Chemnitz Reichenhainer Str. 70 09126 Chemnitz Germany

21. François C. Bocquet Aachen Experimentalphysik IV A

    Forschungszentrum Jülich · Jülich Aachen Research Alliance · RWTH Aachen University

    Affiliation as printed

    Experimentalphysik IV A RWTH Aachen University 52074 Aachen Germany

    Jülich Aachen Research Alliance (JARA) Fundamentals of Future Information Technology 52425 Jülich Germany

    Peter Grünberg Institut (PGI‐3) Forschungszentrum Jülich 52425 Jülich Germany

    Peter Grünberg Institut (PGI‐3) Forschungszentrum Jülich 52425 Jülich Germany

22. Christoph Tegenkamp corresponding

    Chemnitz University of Technology

    Affiliation as printed

    Analytik an Festkörperoberflächen Institut für Physik Technische Universität Chemnitz Reichenhainer Str. 70 09126 Chemnitz Germany