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Berlin 2024 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 51: Topological Semimetals II

TT 51.4: Vortrag

Mittwoch, 20. März 2024, 15:45–16:00, H 3007

Multiplicative topological semimetals — •Adipta Pal1,2, Joe H. Winter1,2,3, and Ashley M. Cook1,21Max Planck Intitute for the Physics of Complex Systems, Nöthnitzer Str. 38, 01187 Dresden, Germany — 2Max Planck Institute for Chemical Physics of Solids, Nöthnitzer Str. 40, 01187 Dresden, Germany — 3SUPA, School of Physics and Astronomy, University of St. Andrews, North Haugh, St. Andrews KY169SS, UK

Exhaustive study of topological semimetal phases of matter in equilibriated electonic systems and myriad extensions has built upon the foundations laid by earlier introduction and study of the Weyl semimetal, with broad applications in topologically-protected quantum computing, spintronics, and optical devices. We extend recent introduction of multiplicative topological phases to find previously-overlooked topological semimetal phases of electronic systems in equilibrium, with minimal symmetry-protection. We look into the multiplicative counterpart of the Weyl semimetal and find rich and distinctive bulk-boundary correspondence and response signatures that greatly expand understanding of consequences of topology in condensed matter settings, such as limits on Fermi arc connectivity and structure and transport signatures such as the chiral anomaly.

Keywords: semimetal; multiplicative; Fermi arcs; chiral anomaly; non-linear response

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