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 in 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 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 DFT calculations and ARPES 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.

arXiv comment8 pages, 5 figures

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• Light-induced renormalization of the Dirac quasiparticles in the nodal-line semimetal ZrSiSe
• Modular Arithmetic with Nodal Lines: Drumhead Surface States in ZrSiTe
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• Chemical pressure effect on the optical conductivity of the nodal-line semimetals ZrSi$Y$ ($Y$=S, Se, Te) and ZrGe$Y$ ($Y$=S, Te)
• Semi-Dirac Fermions in a Topological Metal
• Determination of the Fermi surface and field-induced quasi-particle tunneling around the Dirac nodal-loop in ZrSiS
• Evidence of topological nodal lines and surface states in the centrosymmetric superconductor SnTaS2
• Evidence for bulk nodal loops and universality of Dirac-node arc surface states in ZrGeXc (Xc = S, Se, Te)
• Origin of the butterfly magnetoresistance in a Dirac nodal-line system
• Surface Termination Dependent Quasiparticle Scattering Interference and Magneto-transport Study on ZrSiS
• Evolution of Electronic and Magnetic Properties in Topological Semimetal SmSbxTe2-x
• Magneto-optical probe of the fully gapped Dirac band in ZrSiS
• Origin of the butterfly magnetoresistance in ZrSiS
• Symmetry-selective quasiparticle scattering and electric field tunability of the ZrSiS surface electronic structure
• Electron-phonon interaction and zero-field charge carrier transport in the nodal-line semimetal ZrSiS
• Signature of an Ultrafast Photo-Induced Lifshitz Transition in the Nodal-Line Semimetal ZrSiTe
• Topological domain wall states in a non-symmorphic chiral chain
• Floating Edge Bands in the Bernevig-Hughes-Zhang model with Altermagnetism
• Selection rules for quasiparticle interference with internal nonsymmorphic symmetries
• Quasiparticle interference observation of the topologically non-trivial drumhead surface state in ZrSiTe
• Unified low-energy effective Hamiltonian and the band topology of $p$-block square-net layer derivatives
• Electron-phonon Coupling and Kohn Anomaly due to the Floating 2D Electronic Bands on the Surface of ZrSiS
• Dirac Nodal Line and Rashba Splitting Surface States in Nonsymmorphic ZrGeTe
• Quasiparticle interference in altermagnets
• Kerr effect in tilted nodal loop semimetals
• Local and global patterns in quasiparticle interference: a reduced response function approach
• Collective excitations and screening in two-dimensional tilted nodal-line semimetals
• Projective Quasiparticle Interference of a Single Scatterer to Analyze the Electronic Band Structure of ZrSiS
• Electronic Structure of a Nodal Line Semimetal Candidate TbSbTe
• Valley polarization of Landau levels driven by residual strain in the ZrSiS surface band
• Evolution of Magnetoresistance in the magnetic topological semimetals NdSbxTe2-x
• Robust quantized thermal conductance of Majorana floating edge bands in d-wave superconductors
• Broken Screw Rotational Symmetry in the Near-Surface Electronic Structure of $AB$-Stacked Crystals
• Three-nodal surface phonons in solid-state materials: Theory and material realization
• Crystal Growth and anisotropic magneto-transport properties of semimetallic LaNiSb3