Cited by 170Topological Materials and Phenomena2D Materials and ApplicationsAdvanced Condensed Matter Physics

Dirac line nodes and effect of spin-orbit coupling in the nonsymmorphic critical semimetals MSiS(M=Hf,Zr)

Open access
Chen, C., Xu, X., Jiang, J., Wu, S.-C., Qi, Y. P., Yang, L. X., Wang, M. X., Sun, Y. +13 more·2017·Physical Review B

Abstract

Topological Dirac semimetals (TDSs) represent a new state of quantum matter recently discovered that offers a platform for realizing many exotic physical phenomena. A TDS is characterized by the linear touching of bulk (conduction and valance) bands at discrete points in the momentum space [i.e., three-dimensional (3D) Dirac points], such as in $\mathrm{N}{\mathrm{a}}_{3}\mathrm{Bi}$ and $\mathrm{C}{\mathrm{d}}_{3}\mathrm{A}{\mathrm{s}}_{2}$. More recently, new types of Dirac semimetals with robust Dirac line nodes (with nontrivial topology or near the critical point between topological phase transitions) have been proposed that extend the bulk linear touching from discrete points to one-dimensional (1D) lines. In this paper, using angle-resolved photoemission spectroscopy (ARPES), we explored the electronic structure of the nonsymmorphic crystals $M\text{SiS}$ $(M=\mathrm{Hf}$, Zr). Remarkably, by mapping out the band structure in the full 3D Brillouin zone (BZ), we observed two sets of Dirac line-nodes in parallel with the ${k}_{z}$ axis and their dispersions. Interestingly, along directions other than the line nodes in the 3D BZ, the bulk degeneracy is lifted by spin-orbit coupling (SOC) in both compounds with larger magnitude in HfSiS. Our paper not only experimentally confirms a new Dirac line-node semimetal family protected by nonsymmorphic symmetry but also helps understanding and further exploring the exotic properties, as well as practical applications of the $M\text{SiS}$ family of compounds.

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Crossref · 10.1103/physrevb.95.125126

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  • Multiple oscillation frequencies are often observed in most topological semimetals, such as the TaAs family and WHM materials with PbFCl-type structure.

    “However, multiple oscillation frequencies are often observed in most topological semimetals, such as those of the TaAs family (179, 180, 182, 183, 191-193, 227, 243) and WHM materials with PbFCl-type structure (W = Zr or Hf; H = Si, Ge, or Sn; M = S, Se, or Te) (156,221,222,226,228,232,233,241,242,244,245).”

    From Transport of Topological Semimetals (2019) · cites this paper as [156]

    The paper identifies HfSiS as having the PbFCl structure type (p. 3) and discusses de Haas–van Alphen quantum oscillations in this material family (p. 6). It does not say that multiple oscillation frequencies were observed, so it does not support that part of the claim. (LLM, conf=0.84)

    Experimental — accuracy not yet measured
  • Some topological semimetals have layered structures and quasi-two-dimensional electronic structure, including ZrSiTe and (Sr/Ba)Mn(Bi/Sb)2.

    “Although most topological semimetals are 3D, there are also some materials with layered structure and that thus display a quasi-2D electronic structure, such as ZrSiTe ( 156) and (Sr/Ba)Mn(Bi/Sb) 2 (143, 173, 177, 213).”

    From Transport of Topological Semimetals (2019) · cites this paper as [156]

    The citation is attached to ZrSiTe, not to (Sr/Ba)Mn(Bi/Sb)2. Our copy mentions ZrSiTe only in the title of another work in References and notes (p. 8); its discussion of a layered crystal structure concerns HfSiS (p. 3). A search for ZrSiTe and quasi-two-dimensional electronic structure found no passage establishing the claimed properties for ZrSiTe. (LLM, conf=0.76)

    Experimental — accuracy not yet measured

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Research works printed but not linked: 3

  1. [1][1] Z. Wang, Y. Sun, X.-Q. Chen, C. Franchini, G. Xu, H. Weng, X. Dai, and Z. Fang, Dirac semimetal and topological phase transitions in A3Bi (A=Na, K, Rb), Physical Review B 85 , 195320 (2012). -
  2. [2][2] Z. Wang, H. Weng, Q. Wu, X. Dai, and Z. Fang, Three-dimensional Dirac semimetal and quantum transport in Cd3As2 , Physical Review B 88 , 125427 (2013). -
  3. [31][31] C. Le, S. Qin, X. Wu, X. Dai, P. Fu, and J. Hu, Three-dimensional Critical Dirac semimetal in KMgBi, arXiv:1606.05042 (2016). - · arXiv

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Authors
Chen, C., Xu, X., Jiang, J., Wu, S.-C., Qi, Y. P., Yang, L. X., Wang, M. X., Sun, Y., Schröter, N. B. M., Yang, H. F., Schoop, L. M., Lv, Y. Y., Zhou, J., Chen, Y. B., Yao, S. H., Lu, M. H., Chen, Y. F., Felser, C., Yan, B. H., Liu, Z. K., & Chen, Y. L.
Affiliations
  • University of Oxford (GB)
  • State Key Laboratory of Low-Dimensional Quantum Physics (CN)
  • Pohang University of Science and Technology (KR)
  • Max Planck Institute for Chemical Physics of Solids (DE)
  • Chinese Academy of Sciences (CN)
  • Max Planck Institute for Solid State Research (DE)
  • National Laboratory of Solid State Microstructures (CN)
Venue
Physical Review B
Published
2017-03-22
Volume
95
Issue
12
ISSN
  • 2469-9950 (ISSN-L)
  • 2469-9969
OpenAlex
W2580579542
Cited by
170
References
38
Citations by year
2026: 9 · 2025: 9 · 2024: 14 · 2023: 13 · 2022: 16 · 2021: 27 · 2020: 18 · 2019: 25 · 2018: 23 · 2017: 15 · 2016: 1
FWCI
10.87
Type
journal article
Language
en
Open access
Locations
  • Physical review. B./Physical review. B (publishedVersion)
  • arXiv (Cornell University) (submittedVersion)
  • MPG.PuRe (Max Planck Society) (submittedVersion)
  • arXiv (Cornell University)
  • Bulletin of the American Physical Society
Funders
  • Engineering and Physical Sciences Research Council (EP/M020517/1)
  • Chinese Academy of Sciences (2015HSC-UE013)
  • National Natural Science Foundation of China (11674229)
  • European Research Council (291472)
  • National Research Foundation of Korea (2011-0030787)
Topics
  • Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Topological Materials and Phenomena
  • Physical Sciences › Materials Science › Materials Chemistry › 2D Materials and Applications
  • Physical Sciences › Physics and Astronomy › Condensed Matter Physics › Advanced Condensed Matter Physics
Keywords
nonsymmorphic symmetry, topological Dirac semimetal, spin-orbit coupling, ZrSiS, electronic band structure, angle-resolved photoemission

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