Regensburg 2019 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 61: Topology and Symmetry-Protected Materials (joint session O/MA/TT)

TT 61.5: Hauptvortrag

Donnerstag, 4. April 2019, 16:00–16:30, H24

Luttinger liquid in a box: electrons confined within MoS2 mirror twin boundaries — •Wouter Jolie1,2, Clifford Murray1, Philipp Weiss3, Joshua Hall1, Fabian Portner3, Nicolae Atodiresei4, Arkady Krasheninnikov5,6, Carsten Busse1,2,7, Hannu-Pekka Komsa6, Achim Rosch3, and Thomas Michely11II. Physikalisches Institut, University of Cologne, Germany — 2Institut für Materialphysik, Westfälische Wilhelms-Universität Münster, Germany — 3Institute for Theoretical Physics, University of Cologne, Germany — 4Peter Grünberg Institute and Institute for Advanced Simulation, Forschungszentrum Jülich, Germany — 5Helmholtz-Zentrum Dresden-Rossendorf, Germany — 6Department of Applied Physics, Aalto University, Finland — 7Department Physik, Universität Siegen, Germany

Two- or three-dimensional metals are usually well described by weakly interacting, fermionic quasiparticles. This concept breaks down in one dimension due to strong Coulomb interactions. There, low-energy excitations are expected to be collective bosonic modes, which fractionalize into independent spin and charge density waves.

In this talk I will present how we construct a well-isolated, one-dimensional metal of finite length using mirror twin boundaries in molybdenum disulfide (MoS2). We demonstrate how scanning tunneling spectroscopy can identify the unique fingerprints of confined, strongly interacting states, thereby providing a direct and local experimental tool to investigate spin-charge separation in real space.

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