Berlin 2024 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 57: Topology: Poster
TT 57.11: Poster
Mittwoch, 20. März 2024, 15:00–18:00, Poster E
Topological flat bands in d-wave superconductors — •Gabriele Domaine1,2, Yiran Liu2, Tohru Kurosawa3, Julia Diana Küspert4, Pietro Maria Bonetti2, Shigemi Terakawa1, Ding Pei5, Mihir Date1, Matteo Minola2, Izabela Biało4, Timur Kim6, Matthew D. Watson6, Jiabao Yang1, Naoki Momono3, Migaku Oda7, Neven Barišić8, Cephise Cacho6, Stuart Stephen Papworth Parkin1, Johan Chang4, Bernhard Keimer2, Andreas P Schnyder2, and Niels B. M. Schröter1 — 1Max Planck Institute of Microstructure Physics, Halle (Saale), Germany — 2Max-Planck-Institut für Festkörperforschung, Stuttgart, Germany — 3Department of Applied Sciences, Muroran Institute of Technology, Muroran, Japan — 4Physik-Institut, Universität Zürich, Zürich, Switzerland — 5Synchrotron-SOLEIL, Université Paris-Saclay, Saint-Aubin, BP48, Gif sur Yvette, Paris F91192, France — 6Diamond Light Source, Harwell Campus, Didcot, OX11 0DE, United Kingdom — 7Department of Physics, Hokkaido University, Sapporo, Japan — 8Department of Physics, Faculty of Science, University of Zagreb, Bijenička cesta 32, 10000 Zagreb
In superconductors with a d(x2-y2)-gap symmetry, the existence of a non-zero winding number leads to the appearance of zero-energy flat-bands on certain edges. These bands are protected by the chiral symmetry and occupy a two-dimensional region of the Brillouin zone bounded by the projections of the superconducting nodes. A recently established approach to cleave crystals by means of micro-notches paves the way for the study of these surface states by ARPES.
Keywords: Topology; Unconventional Superconductors; Cuprates