Regensburg 2025 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 5: Superconductivity: Properties and Electronic Structure I
TT 5.9: Vortrag
Montag, 17. März 2025, 11:45–12:00, H36
Challenges in identifying nematic superconductivity of CsV3Sb5 kagome metal via transport measurements — •Yu-Chi Yao1,2, Fei Sun1, José Guimarães1,2, and Haijing Zhang1 — 1Max Planck Institute for Chemical Physics of Solids, 01187, Dresden, Germany — 2School of Physics and Astronomy, University of St Andrews, St Andrews, KY16 9SS, UK
Nematicity refers to the spontaneous symmetry breaking beyond the crystal-imposed anisotropy in the electron wavefunction. On the other hand, understanding the interplay between nematicity and superconductivity could be crucial for determining the underlying pairing mechanism in various correlated systems, such as cuprates [1] and iron-based [2] unconventional superconductors. In this study, we focus on the recently discovered kagome metal CsV3Sb5, which is famous for its multiple competing or coexisting orders [3,4]. By using CsV3Sb5 as the prototypical system, we address the challenges of identifying nematic superconductivity in transport measurements and systematically disentangle the extrinsic factors, such as imperfections in field alignment, from intrinsic nematic supercondcuting behavior.
[1] R. Daou et al. Nature 463, 519-522 (2010).
[2] J. H. Chu et al. Science, 329(5993), 824-826 (2010).
[3] B. R. Ortiz et al. Phys. Rev. Lett. 125(24), 247002 (2020).
[4] F. Sun, H. Zhang et al. arXiv:2408.08117.
Keywords: Nematicity; superconductivity; kagome metal; transport properties