@article{b2b8adcd3bde4de7bf26f94ef627845e,
title = "Fermi-arc diversity on surface terminations of the magnetic Weyl semimetal Co3Sn2S2",
abstract = "Bulk-surface correspondence in Weyl semimetals ensures the formation of topological {"} Fermi arc{"} surface bands whose existence is guaranteed by bulk Weyl nodes. By investigating three distinct surface terminations of the ferromagnetic semimetal Co3Sn2S2, we verify spectroscopically its classification as a time-reversal symmetry-broken Weyl semimetal. We show that the distinct surface potentials imposed by three different terminations modify the Fermi-arc contour and Weyl node connectivity. On the tin (Sn) surface, we identify intra-Brillouin zone Weyl node connectivity of Fermi arcs, whereas on cobalt (Co) termination, the connectivity is across adjacent Brillouin zones. On the sulfur (S) surface, Fermi arcs overlap with nontopological bulk and surface states. We thus resolve both topologically protected and nonprotected electronic properties of a Weyl semimetal.",
author = "Noam Morali and Rajib Batabyal and Nag, \{Pranab Kumar\} and Enke Liu and Qiunan Xu and Yan Sun and Binghai Yan and Claudia Felser and Nurit Avraham and Haim Beidenkopf",
note = "Acknowledgments: We acknowledge fruitful discussions with A. Bernevig and L. Muechler. Funding: H.B. acknowledges support from the United States–Israel Binational Science Foundation (BSF, grant no. 2016389), Helmsley Charitable Trust (grant no. 2018PG-ISL006), the European Research Council (ERC) under the European Union{\textquoteright}s Horizon 2020 research and innovation program (grant agreement no. 678702), and the German-Israeli Foundation (GIF, I-1364-303.7/2016); E.L. acknowledges the National Natural Science Foundation of China (no. 51722106) and National Key R\&D Program of China (no. 2017YFA0206303); B.Y. acknowledges financial support from the Willner Family Leadership Institute for the Weizmann Institute of Science, the Benoziyo Endowment Fund for the Advancement of Science, Ruth and Herman Albert Scholars Program for New Scientists, the European Research Council (ERC) under the European Union{\textquoteright}s Horizon 2020 research and innovation program (grant agreement no. 815869), and the collaborative Max Planck Lab on “Topological Materials.” C.F. acknowledges funding by The W{\"u}rzburg-Dresden Cluster of Excellence on Complexity and Topology in Quantum Matter - ct.qmat (EXC 2147, project ID 39085490).",
year = "2019",
month = sep,
day = "20",
doi = "10.1126/science.aav2334",
language = "الإنجليزيّة",
volume = "365",
pages = "1286--1291",
journal = "Science",
issn = "0036-8075",
publisher = "American Association for the Advancement of Science",
number = "6459",
}