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TT: Fachverband Tiefe Temperaturen
TT 3: Superconductivity: Properties and Electronic Structure
TT 3.1: Vortrag
Montag, 27. März 2023, 09:30–09:45, HSZ 103
Band-selective quasiparticle scatterers in a two-band superconductor — •Thomas Gozlinski1, Qili Li1, Nola Warwick1, Janic Beck1, and Wulf Wulfhekel1,2 — 1Physikalisches Institut (PHI), Karlsruher Institut für Technologie (KIT) — 2Institute for Quantum Materials and Technologies (IQMT), Karlsruher Institut für Technologie (KIT)
We study stacking fault tetrahedra (SFTs) in a bulk Pb crystal by mK scanning tunnelling microscopy and spectroscopy and find that the Bogoliubons of the two superconducting bands produce different quasiparticle interference patterns owed to the respective Fermi surface anisotropy. We believe that such extended crystal defects provide a platform to experimentally study interband couplings and scattering rates in a multiband superconductor.