Topological flat bands in frustrated kagome lattice CoSn

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Acknowledgement

We thank Paul Neves for insightful discussions and helpful feedbacks. The authors acknowledge Yang Zhang for helping the computation of spin Hall conductivity.

Funding

This work was supported by the STC Center for Integrated Quantum Materials, NSF Grant No. DMR-1231319. R.C. acknowledges support from the Alfred P. Sloan Foundation. This research was funded, in part, by the Gordon and Betty Moore Foundation EPiQS Initiative, Grant No. GBMF3848 to J.G.C. and ARO Grant No. W911NF-16-1-0034. This research used resources of the Advanced Light Source, a US DOE Office of Science User Facility under contract no. DE-AC02-05CH11231. M.K. acknowledges support from the Samsung Scholarship from the Samsung Foundation of Culture. S.F. is supported by a Rutgers Center for Material Theory Distinguished Postdoctoral Fellowship. L.Y. acknowledges support from the Tsinghua Education Foundation.

Contributions

M.K., J.D., C.J., A.B., and E.R. performed the ARPES experiment and analyzed the resulting data. S.F. performed the theoretical calculations with help from H.C.P and E.K. L.Y. synthesized and characterized the single crystals. J.G.C. and R.C. supervised the project. M.K., S.F., L.Y., and R.C. wrote the manuscript with input from all coauthors.

Data Availability

The data that support the plots within this paper and other findings of this study are available from the corresponding author upon reasonable request.

Conflict of Interest

The authors declare no competing interests.

Attached Files

Article: 41467-020-17465-1.pdf

Supplementary information: 41467_2020_17465_MOESM1_ESM.pdf