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.
机构:
Princeton Univ, Dept Phys, Joseph Henry Labs Phys, Princeton, NJ 08540 USAPrinceton Univ, Dept Phys, Joseph Henry Labs Phys, Princeton, NJ 08540 USA
Inoue, Hiroyuki
;
Gyenis, Andras
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Princeton Univ, Dept Phys, Joseph Henry Labs Phys, Princeton, NJ 08540 USAPrinceton Univ, Dept Phys, Joseph Henry Labs Phys, Princeton, NJ 08540 USA
Gyenis, Andras
;
Wang, Zhijun
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Princeton Univ, Dept Phys, Joseph Henry Labs Phys, Princeton, NJ 08540 USAPrinceton Univ, Dept Phys, Joseph Henry Labs Phys, Princeton, NJ 08540 USA
Wang, Zhijun
;
Li, Jian
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Princeton Univ, Dept Phys, Joseph Henry Labs Phys, Princeton, NJ 08540 USAPrinceton Univ, Dept Phys, Joseph Henry Labs Phys, Princeton, NJ 08540 USA
Li, Jian
;
Oh, Seong Woo
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Princeton Univ, Dept Phys, Joseph Henry Labs Phys, Princeton, NJ 08540 USAPrinceton Univ, Dept Phys, Joseph Henry Labs Phys, Princeton, NJ 08540 USA
Oh, Seong Woo
;
Jiang, Shan
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Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA
Univ Calif Los Angeles, Calif NanoSyst Inst, Los Angeles, CA 90095 USAPrinceton Univ, Dept Phys, Joseph Henry Labs Phys, Princeton, NJ 08540 USA
Jiang, Shan
;
Ni, Ni
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机构:
Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA
Univ Calif Los Angeles, Calif NanoSyst Inst, Los Angeles, CA 90095 USAPrinceton Univ, Dept Phys, Joseph Henry Labs Phys, Princeton, NJ 08540 USA
Ni, Ni
;
Bernevig, B. Andrei
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Princeton Univ, Dept Phys, Joseph Henry Labs Phys, Princeton, NJ 08540 USAPrinceton Univ, Dept Phys, Joseph Henry Labs Phys, Princeton, NJ 08540 USA
Bernevig, B. Andrei
;
Yazdani, Ali
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Princeton Univ, Dept Phys, Joseph Henry Labs Phys, Princeton, NJ 08540 USAPrinceton Univ, Dept Phys, Joseph Henry Labs Phys, Princeton, NJ 08540 USA
机构:
Princeton Univ, Dept Phys, Joseph Henry Labs Phys, Princeton, NJ 08540 USAPrinceton Univ, Dept Phys, Joseph Henry Labs Phys, Princeton, NJ 08540 USA
Inoue, Hiroyuki
;
Gyenis, Andras
论文数: 0引用数: 0
h-index: 0
机构:
Princeton Univ, Dept Phys, Joseph Henry Labs Phys, Princeton, NJ 08540 USAPrinceton Univ, Dept Phys, Joseph Henry Labs Phys, Princeton, NJ 08540 USA
Gyenis, Andras
;
Wang, Zhijun
论文数: 0引用数: 0
h-index: 0
机构:
Princeton Univ, Dept Phys, Joseph Henry Labs Phys, Princeton, NJ 08540 USAPrinceton Univ, Dept Phys, Joseph Henry Labs Phys, Princeton, NJ 08540 USA
Wang, Zhijun
;
Li, Jian
论文数: 0引用数: 0
h-index: 0
机构:
Princeton Univ, Dept Phys, Joseph Henry Labs Phys, Princeton, NJ 08540 USAPrinceton Univ, Dept Phys, Joseph Henry Labs Phys, Princeton, NJ 08540 USA
Li, Jian
;
Oh, Seong Woo
论文数: 0引用数: 0
h-index: 0
机构:
Princeton Univ, Dept Phys, Joseph Henry Labs Phys, Princeton, NJ 08540 USAPrinceton Univ, Dept Phys, Joseph Henry Labs Phys, Princeton, NJ 08540 USA
Oh, Seong Woo
;
Jiang, Shan
论文数: 0引用数: 0
h-index: 0
机构:
Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA
Univ Calif Los Angeles, Calif NanoSyst Inst, Los Angeles, CA 90095 USAPrinceton Univ, Dept Phys, Joseph Henry Labs Phys, Princeton, NJ 08540 USA
Jiang, Shan
;
Ni, Ni
论文数: 0引用数: 0
h-index: 0
机构:
Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA
Univ Calif Los Angeles, Calif NanoSyst Inst, Los Angeles, CA 90095 USAPrinceton Univ, Dept Phys, Joseph Henry Labs Phys, Princeton, NJ 08540 USA
Ni, Ni
;
Bernevig, B. Andrei
论文数: 0引用数: 0
h-index: 0
机构:
Princeton Univ, Dept Phys, Joseph Henry Labs Phys, Princeton, NJ 08540 USAPrinceton Univ, Dept Phys, Joseph Henry Labs Phys, Princeton, NJ 08540 USA
Bernevig, B. Andrei
;
Yazdani, Ali
论文数: 0引用数: 0
h-index: 0
机构:
Princeton Univ, Dept Phys, Joseph Henry Labs Phys, Princeton, NJ 08540 USAPrinceton Univ, Dept Phys, Joseph Henry Labs Phys, Princeton, NJ 08540 USA