TY - JOUR
T1 - The effect of spin-orbit coupling on nonsymmorphic square-net compounds
AU - Topp, Andreas
AU - Vergniory, Maia G.
AU - Krivenkov, Maxim
AU - Varykhalov, Andrei
AU - Rodolakis, Fanny
AU - McChesney, Jessica L.
AU - Lotsch, Bettina V.
AU - Ast, Christian R.
AU - Schoop, Leslie M.
N1 - Funding Information:
We gratefully acknowledge the financial support by the Max Planck Society. We thank HZB for the allocation of synchrotron radiation beamtime. Work at Argonne National Laboratory is supported by the U.S. Department of Energy, Office of Science, under Contract no. DE-AC02-06CH11357; additional support by National Science Foundation under Grant no. DMR-0703406. This work was supported by the DFG, proposal no. SCHO 1730/1-1.
Funding Information:
We gratefully acknowledge the financial support by the Max Planck Society . We thank HZB for the allocation of synchrotron radiation beamtime. Work at Argonne National Laboratory is supported by the U.S. Department of Energy , Office of Science , under Contract no. DE-AC02-06CH11357 ; additional support by National Science Foundation under Grant no. DMR-0703406 . This work was supported by the DFG , proposal no. SCHO 1730/1-1 .
Publisher Copyright:
© 2017 Elsevier Ltd
PY - 2019/5
Y1 - 2019/5
N2 - In the field of Dirac materials, spin-orbit coupling (SOC) is usually considered disruptive, since it may lift degeneracies that are not protected by high-symmetry elements. Nonsymmorphic symmetries force degenerate points in the band structure at high-symmetry points that are not disrupted by SOC. The degeneracy is, however, often protected along whole high-symmetry lines or faces resulting in highly anisotropic crossings or nodal lines, which can considerably limit the region, in which the bands are linearly dispersed. It has been theoretically suggested that SOC could circumvent this problem. Here, we show experimentally that SOC can lift the extended protection in nonsymmorphic square-net compounds. We compare ZrSiS and CeSbTe, two materials with drastically different SOC, to show the effect of SOC on the band structure by means of angle-resolved photoemission spectroscopy and density functional theory calculations.
AB - In the field of Dirac materials, spin-orbit coupling (SOC) is usually considered disruptive, since it may lift degeneracies that are not protected by high-symmetry elements. Nonsymmorphic symmetries force degenerate points in the band structure at high-symmetry points that are not disrupted by SOC. The degeneracy is, however, often protected along whole high-symmetry lines or faces resulting in highly anisotropic crossings or nodal lines, which can considerably limit the region, in which the bands are linearly dispersed. It has been theoretically suggested that SOC could circumvent this problem. Here, we show experimentally that SOC can lift the extended protection in nonsymmorphic square-net compounds. We compare ZrSiS and CeSbTe, two materials with drastically different SOC, to show the effect of SOC on the band structure by means of angle-resolved photoemission spectroscopy and density functional theory calculations.
KW - C Ab initio calculations
KW - C Photoelectron spectroscopy
KW - D Electronic structure
KW - D Surface properties
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U2 - 10.1016/j.jpcs.2017.12.035
DO - 10.1016/j.jpcs.2017.12.035
M3 - Article
AN - SCOPUS:85039547096
SN - 0022-3697
VL - 128
SP - 296
EP - 300
JO - Journal of Physics and Chemistry of Solids
JF - Journal of Physics and Chemistry of Solids
ER -