Dresden 2020 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 47: Poster Session - 2D Materials: Electronic Structure, Excitations, etc.
O 47.11: Poster
Dienstag, 17. März 2020, 18:15–20:00, P2/EG
In Operando Soft X-Ray Photoemission Spectroscopy of 2D Materials — Sanjoy K. Mahatha1, •Alena Nierhauve2, Sebastian Rohlf3, Benedikt Schulte4, Florian Diekmann3, Jens Buck3,5, Matthias Kalläne3,5, Gregor Praedel2,4, James McIver4, and Kai Rossnagel1,3,5 — 1Deutsches Elektronen-Synchrotron DESY, 22607 Hamburg, Germany — 2Fachbereich Physik, Universität Hamburg, 20355 Hamburg, Germany — 3Institut für Experimentelle und Angewandte Physik, Christian-Albrechts-Universität zu Kiel, 24098 Kiel, Germany — 4Max Planck Institute for the Structure and Dynamics of Matter, Hamburg, Germany — 5Ruprecht-Haensel-Labor, Christian-Albrechts-Universität zu Kiel und Deutsches Elektronen-Synchrotron DESY, 24098 Kiel und 22607 Hamburg, Germany
2D materials provide a fruitful platform for the realization of novel forms of electronics including "Mottronics", "valleytronics", and "twistronics". Specifically, the combination of sub-micrometer position-resolved angle-resolved photoemission spectroscopy (ARPES) with in operando electrical control of device-like structures made from 2D materials opens a new avenue toward the direct probing and engineering of novel band-structure and transport phenomena underlying device functionality [1]. Here, we present first in operando results obtained from graphene and transition-metal dichalcogenides at our new sub-micrometer ARPES endstation at the soft X-ray beamline P04 of PETRA III.
[1] P.V. Nguyen et al., Nature 572, 220 (2019).