STM in the flat band kagome lattice compound Co3Sn2S2

Vol 1 2021 - 142237
Poster
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Abstract

The system Co3Sn2S2 has a kagome lattice formed by Co atoms which leads to the formation of a flat band close to the Fermi level [1,2]. Here we present new STM measurements at magnetic fields up to 14T in high quality single crystals of Co3Sn2S2 [3]. We use the sample cleaving mechanism discussed in [4] and the coarse approach system of`[5]. We discuss the different surface terminations, quasiparticle interference experiments at high magnetic fields and the Zeeman effect on the flat band. We compare our results with previous results at zero field and under magnetic fields of 8 T [1].

References

[1] Jia-Xin Yin et al. Nature Physics, 15, 443-448 (2019)
[2] Morali et al. Science, 365, 1286-1291 (2019)
[3] Xiao Lin et al. Phylosophical Magazine, 92, 2436-2447 (2012)
[4] H. Suderow et al., Rev Sci Instrum 82, 033711 (2011)
[5] M. Fernandez-Lomana et al., Acepted Rev. Sci. Instrum. (2021)

Institutions
  • 1 Universidad Autónoma de Madrid
  • 2 Department of Physics and Astronomy / Ames Laboratory / Iowa State University
  • 3 DMSE / Ames Laboratory / Ames Laboratory
Track
  • Correlated topological phases
Keywords
STM
High magnetic fields
low temperatures
Weyl Semimetal