Assembly of Arbitrary Designer Heterostructures with Atomically Clean Interfaces

Advanced Materials Interfaces, vol. 11

Abstract

Abstract Van der Waals heterostructures are an excellent platform for studying intriguing interface phenomena, such as moiré and proximity effects. Many of these phenomena occurring in such heterostructures' interfaces and surfaces have so far been hampered because of their high sensitivity to disorder and interface contamination. Here, it reports a dry polymer‐based assembly technique to fabricate arbitrary designer van der Waals heterostructures with atomically clean surfaces. The key features of the suspended dry pick‐up and flip‐over assembly technique are: 1) the heterostructure surface never comes into contact with polymers, 2) the assemble is entirely solvent‐free, 3) it is entirely performed in a glovebox, and 4) it only requires temperatures below 130 °C. By performing ambient atomic force microscopy and atomically‐resolved scanning tunneling microscopy on example heterostructures, it demonstrates the fabrication of air‐sensitive heterostructures with ultra‐clean interfaces and surfaces. It envisions that, due to the avoidance of polymer melting, this technique is potentially compatible with heterostructure assembly under ultra‐high vacuum conditions, which promises ultimate heterostructure quality.

Authors 12

1. Tobias Wichmann Aachen Institute for Experimental Physics IV A

   Forschungszentrum Jülich · Jülich Aachen Research Alliance · RWTH Aachen University

   Affiliation as printed

   Institute for Experimental Physics IV A RWTH Aachen 52074 Aachen Germany

   Jülich Aachen Research Alliance Fundamentals of Future Information Technology 52425 Jülich Germany

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

2. Sabine Wenzel

   Forschungszentrum Jülich · Jülich Aachen Research Alliance

   Affiliation as printed

   Jülich Aachen Research Alliance Fundamentals of Future Information Technology 52425 Jülich Germany

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

3. Tomáš Samuely

   University of Pavol Jozef Šafárik · Slovak Academy of Sciences · Institute of Experimental Physics of the Slovak Academy of Sciences

   Affiliation as printed

   Centre of Low Temperature Physics, Faculty of Science Pavol Jozef Šafárik University & Institute of Experimental Physics, Slovak Academy of Sciences 04001 Košice Slovakia

4. Oleksander Onufriienko

   University of Pavol Jozef Šafárik · Slovak Academy of Sciences · Institute of Experimental Physics of the Slovak Academy of Sciences

   Affiliation as printed

   Centre of Low Temperature Physics, Faculty of Science Pavol Jozef Šafárik University & Institute of Experimental Physics, Slovak Academy of Sciences 04001 Košice Slovakia

5. Pavol Szabó

   University of Pavol Jozef Šafárik · Slovak Academy of Sciences · Institute of Experimental Physics of the Slovak Academy of Sciences

   Affiliation as printed

   Centre of Low Temperature Physics, Faculty of Science Pavol Jozef Šafárik University & Institute of Experimental Physics, Slovak Academy of Sciences 04001 Košice Slovakia

6. Kenji Watanabe

   National Institute for Materials Science

   Affiliation as printed

   Research Center for Electronic and Optical Materials National Institute for Materials Science 1‐1 Namiki Tsukuba 305‐0044 Japan

   Research Center for Electronic and Optical Materials, National Institute for Materials Science 1-1 Namiki, Tsukuba, 305-0044 Japan

7. Takashi Taniguchi

   National Institute for Materials Science

   Affiliation as printed

   Research Center for Materials Nanoarchitectonics National Institute for Materials Science 1‐1 Namiki Tsukuba 305‐0044 Japan

   Research Center for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba, 305-0044 Japan

8. Jiaqiang Yan

   Oak Ridge National Laboratory

   Affiliation as printed

   Materials Science and Technology Division Oak Ridge National Laboratory Oak Ridge TN 37831 USA

   Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831 USA

9. Frank Stefan Tautz Aachen Institute for Experimental Physics IV A

   Forschungszentrum Jülich · Jülich Aachen Research Alliance · RWTH Aachen University

   Affiliation as printed

   Institute for Experimental Physics IV A RWTH Aachen 52074 Aachen Germany

   Jülich Aachen Research Alliance Fundamentals of Future Information Technology 52425 Jülich Germany

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

10. Felix Lüpke

    Forschungszentrum Jülich · Jülich Aachen Research Alliance

    Affiliation as printed

    Jülich Aachen Research Alliance Fundamentals of Future Information Technology 52425 Jülich Germany

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

11. Markus Ternes Aachen Institute for Experimental Physics II B

    Forschungszentrum Jülich · Jülich Aachen Research Alliance · RWTH Aachen University

    Affiliation as printed

    Institute for Experimental Physics II B RWTH Aachen 52074 Aachen Germany

    Jülich Aachen Research Alliance Fundamentals of Future Information Technology 52425 Jülich Germany

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

12. Jose Martinez‐Castro corresponding Aachen Institute for Experimental Physics II B

    Forschungszentrum Jülich · Jülich Aachen Research Alliance · RWTH Aachen University

    Affiliation as printed

    Institute for Experimental Physics II B RWTH Aachen 52074 Aachen Germany

    Jülich Aachen Research Alliance Fundamentals of Future Information Technology 52425 Jülich Germany

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