Dresden 2026 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 5: Superconductivity: Sample Preparation and Characterization
TT 5.6: Vortrag
Montag, 9. März 2026, 10:45–11:00, CHE/0089
Characterization and superconducting properties of SrBi2Se4 — •Max Brückner1, Jule Kirschke1, Ashiwini Balodhi1, Cedric Schmitt2, Lukas Gehrig2, Kilian Strauss2, Christoph Flathmann3, Dina I. Fazlizhanova4, Christian Liebscher3, Ilya Eremin5, Simon Moser1,2, Andreas Kreyssig1, and Anna E. Böhmer1 — 1Experimental Physics IV, Ruhr-University Bochum, Bochum — 2Physikalisches Institut and Würzburg-Dresden Cluster of Excellence ct.qmat, Universität Würzburg, Würzburg — 3Faculty of Physics and Astronomy, Ruhr-University Bochum, Bochum — 4private — 5Theoretical Physics III, Ruhr-University Bochum, Bochum
SrBi2Se4 is a newly discovered quasi-one-dimensional superconductor that offers a promising platform for exploring exotic superconductivity in low-dimensional systems. We present the growth of free-standing single crystals using a Bi-Se-rich self-flux method and characterize their structure and composition via x-ray diffraction, transmission electron microscopy, and energy-dispersive x-ray spectroscopy. Heat-capacity and magnetization measurements confirm bulk superconductivity below Tc=2.9 K, while magnetotransport reveals an anisotropic upper-critical field. Additionally, we present angle-resolved photoemission spectroscopy and density-functional theory calculations, that provide insight into the electronic structure and lay the groundwork for understanding possible unconventional superconductivity in SrBi2Se4.
We acknowledge funding from the European Research Council through Project 101040811, Distort-to-Grasp.
Keywords: One dimensional materials; unconventional superconductivity; single crystal growth