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Surface floating 2D bands in layered nonsymmorphic semimetals: ZrSiS and related compounds

Research output: Contribution to journalArticlepeer-review

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Surface floating 2D bands in layered nonsymmorphic semimetals : ZrSiS and related compounds. / Topp, Andreas; Queiroz, Raquel; Grüneis, Andreas; Müchler, Lukas; Rost, Andreas W.; Varykhalov, Andrei; Marchenko, Dmitry; Krivenkov, Maxim; Rodolakis, Fanny; McChesney, Jessica L.; Lotsch, Bettina V.; Schoop, Leslie M.; Ast, Christian R.

In: Physical Review X, Vol. 7, No. 4, 041073, 28.12.2017.

Research output: Contribution to journalArticlepeer-review

Harvard

Topp, A, Queiroz, R, Grüneis, A, Müchler, L, Rost, AW, Varykhalov, A, Marchenko, D, Krivenkov, M, Rodolakis, F, McChesney, JL, Lotsch, BV, Schoop, LM & Ast, CR 2017, 'Surface floating 2D bands in layered nonsymmorphic semimetals: ZrSiS and related compounds', Physical Review X, vol. 7, no. 4, 041073. https://doi.org/10.1103/PhysRevX.7.041073

APA

Topp, A., Queiroz, R., Grüneis, A., Müchler, L., Rost, A. W., Varykhalov, A., Marchenko, D., Krivenkov, M., Rodolakis, F., McChesney, J. L., Lotsch, B. V., Schoop, L. M., & Ast, C. R. (2017). Surface floating 2D bands in layered nonsymmorphic semimetals: ZrSiS and related compounds. Physical Review X, 7(4), [041073]. https://doi.org/10.1103/PhysRevX.7.041073

Vancouver

Topp A, Queiroz R, Grüneis A, Müchler L, Rost AW, Varykhalov A et al. Surface floating 2D bands in layered nonsymmorphic semimetals: ZrSiS and related compounds. Physical Review X. 2017 Dec 28;7(4). 041073. https://doi.org/10.1103/PhysRevX.7.041073

Author

Topp, Andreas ; Queiroz, Raquel ; Grüneis, Andreas ; Müchler, Lukas ; Rost, Andreas W. ; Varykhalov, Andrei ; Marchenko, Dmitry ; Krivenkov, Maxim ; Rodolakis, Fanny ; McChesney, Jessica L. ; Lotsch, Bettina V. ; Schoop, Leslie M. ; Ast, Christian R. / Surface floating 2D bands in layered nonsymmorphic semimetals : ZrSiS and related compounds. In: Physical Review X. 2017 ; Vol. 7, No. 4.

Bibtex - Download

@article{acf6ed01ffc34e51bac0154f00a891c7,
title = "Surface floating 2D bands in layered nonsymmorphic semimetals: ZrSiS and related compounds",
abstract = "In this work, we present a model of the surface states of nonsymmorphic semimetals. These are derived from surface mass terms that lift the high degeneracy imposed on the band structure by the nonsymmorphic bulk symmetries. Reflecting the reduced symmetry at the surface, the bulk bands are strongly modified. This leads to the creation of two-dimensional floating or unpinned bands, which are distinct from Shockley states, quantum well states, or topologically protected surface states. We focus on the layered semimetal ZrSiS to clarify the origin of its surface states. We demonstrate an excellent agreement between density functional theory calculations and angle-resolved photoemission spectroscopy measurements and present an effective four-band model in which similar surface bands appear. Finally, we emphasize the role of the surface chemical potential by comparing the surface density of states in samples with and without potassium coating. Our findings can be extended to related compounds and generalized to other crystals with nonsymmorphic symmetries.",
author = "Andreas Topp and Raquel Queiroz and Andreas Gr{\"u}neis and Lukas M{\"u}chler and Rost, {Andreas W.} and Andrei Varykhalov and Dmitry Marchenko and Maxim Krivenkov and Fanny Rodolakis and McChesney, {Jessica L.} and Lotsch, {Bettina V.} and Schoop, {Leslie M.} and Ast, {Christian R.}",
note = "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 partially supported by the DFG, proposal no. SCHO 1730/1-1.",
year = "2017",
month = dec,
day = "28",
doi = "10.1103/PhysRevX.7.041073",
language = "English",
volume = "7",
journal = "Physical Review X",
issn = "2160-3308",
publisher = "American Physical Society",
number = "4",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - Surface floating 2D bands in layered nonsymmorphic semimetals

T2 - ZrSiS and related compounds

AU - Topp, Andreas

AU - Queiroz, Raquel

AU - Grüneis, Andreas

AU - Müchler, Lukas

AU - Rost, Andreas W.

AU - Varykhalov, Andrei

AU - Marchenko, Dmitry

AU - Krivenkov, Maxim

AU - Rodolakis, Fanny

AU - McChesney, Jessica L.

AU - Lotsch, Bettina V.

AU - Schoop, Leslie M.

AU - Ast, Christian R.

N1 - 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 partially supported by the DFG, proposal no. SCHO 1730/1-1.

PY - 2017/12/28

Y1 - 2017/12/28

N2 - In this work, we present a model of the surface states of nonsymmorphic semimetals. These are derived from surface mass terms that lift the high degeneracy imposed on the band structure by the nonsymmorphic bulk symmetries. Reflecting the reduced symmetry at the surface, the bulk bands are strongly modified. This leads to the creation of two-dimensional floating or unpinned bands, which are distinct from Shockley states, quantum well states, or topologically protected surface states. We focus on the layered semimetal ZrSiS to clarify the origin of its surface states. We demonstrate an excellent agreement between density functional theory calculations and angle-resolved photoemission spectroscopy measurements and present an effective four-band model in which similar surface bands appear. Finally, we emphasize the role of the surface chemical potential by comparing the surface density of states in samples with and without potassium coating. Our findings can be extended to related compounds and generalized to other crystals with nonsymmorphic symmetries.

AB - In this work, we present a model of the surface states of nonsymmorphic semimetals. These are derived from surface mass terms that lift the high degeneracy imposed on the band structure by the nonsymmorphic bulk symmetries. Reflecting the reduced symmetry at the surface, the bulk bands are strongly modified. This leads to the creation of two-dimensional floating or unpinned bands, which are distinct from Shockley states, quantum well states, or topologically protected surface states. We focus on the layered semimetal ZrSiS to clarify the origin of its surface states. We demonstrate an excellent agreement between density functional theory calculations and angle-resolved photoemission spectroscopy measurements and present an effective four-band model in which similar surface bands appear. Finally, we emphasize the role of the surface chemical potential by comparing the surface density of states in samples with and without potassium coating. Our findings can be extended to related compounds and generalized to other crystals with nonsymmorphic symmetries.

UR - https://arxiv.org/abs/1709.00319

U2 - 10.1103/PhysRevX.7.041073

DO - 10.1103/PhysRevX.7.041073

M3 - Article

AN - SCOPUS:85039850407

VL - 7

JO - Physical Review X

JF - Physical Review X

SN - 2160-3308

IS - 4

M1 - 041073

ER -

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