Surface Termination Dependent Quasiparticle Scattering Interference and Magneto-transport Study on ZrSiS

Abstract

Dirac nodal line semimetals represent a new state of quantum matters in which the electronic bands touch to form a closed loop with linear dispersion. Here, we report a combined study on ZrSiS by density functional theory calculation, scanning tunneling microscope (STM) and magneto-transport measurements. Our STM measurements reveal the spectroscopic signatures of a diamond-shaped Dirac bulk band and a surface band on two types of cleaved surfaces as well as a spin polarized surface band at $\bar{\Gamma }$ at E~0.6eV on S-surface, consistent with our band calculation. Furthermore, we find the surface termination does not affect the surface spectral weight from the Dirac bulk bands but greatly affect the surface bands due to the change in the surface orbital composition. From our magneto-transport measurements, the primary Shubnikov de-Haas frequency is identified to stem from the hole-type quasi-two-dimensional Fermi surface between Γ and X. The extracted non-orbital magnetoresistance (MR) contribution D($\theta$, H) yields a nearly H-linear dependence, which is attributed to the intrinsic MR in ZrSiS. Our results demonstrate the unique Dirac line nodes phase and the dominating role of Zr-d orbital on the electronic structure in ZrSiS and the related compounds.

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• Topological Insulators
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• Topological nodal semimetals
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• Tunability of the topological nodal-line semimetal phase in ZrSiX-type materials
• Extremely large and significantly anisotropic magnetoresistance in ZrSiS single crystals
• Rules for Phase Shifts of Quantum Oscillations in Topological Nodal-line Semimetals
• Flat optical conductivity in ZrSiS due to two-dimensional Dirac bands
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• Similar ultrafast dynamics of several dissimilar Dirac and Weyl semimetals
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Cited by in corpus (12)

• Tunable large spin Hall and spin Nernst effects in Dirac semimetals ZrXY (X=Si, Ge; Y=S, Se, Te)
• Determination of the Fermi surface and field-induced quasi-particle tunneling around the Dirac nodal-loop in ZrSiS
• 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
• Weyl-like points from band inversions of spin-polarised surface states in NbGeSb
• Anisotropic Berry phase in the Dirac nodal-line semimetal ZrSiS: The effect of spin-orbit coupling
• Symmetry-selective quasiparticle scattering and electric field tunability of the ZrSiS surface electronic structure
• 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
• Ultrafast relaxation of acoustic and optical phonons in a topological nodal-line semimetal ZrSiS
• Projective Quasiparticle Interference of a Single Scatterer to Analyze the Electronic Band Structure of ZrSiS
• Valley polarization of Landau levels driven by residual strain in the ZrSiS surface band