Probing lattice dynamics and electron-phonon coupling in topological nodal-line semimetal ZrSiS

Abstract

Topological materials provide an exclusive platform to study the dynamics of relativistic particles in table-top experiments and offer the possibility of wide-scale technological applications. ZrSiS is a newly discovered topological nodal-line semimetal and has drawn enormous interests. In this report, we have investigated the lattice dynamics and electron-phonon interaction in single crystalline ZrSiS using Raman spectroscopy. Polarization and angle resolved measurements have been performed and the results have been analyzed using crystal symmetries and theoretically calculated atomic vibrational patterns along with phonon dispersion spectra. Wavelength and temperature dependent measurements show the complex interplay of electron and phonon degrees of freedom, resulting in resonant phonon and quasielastic electron scatterings through inter-band transitions. Our high-pressure Raman studies reveal vibrational anomalies, which were further investigated from the high-pressure synchrotron x-ray diffraction (HPXRD) spectra. From HPXRD, we have clearly identified pressure-induced structural transitions and coexistence of multiple phases, which also indicate possible electronic topological transitions in ZrSiS. The present study not only provides the fundamental information on the phonon subsystem, but also sheds some light in understanding the topological nodal-line phase in ZrSiS and other iso-structural systems.

References in corpus (22)

• Phonons and related properties of extended systems from density-functional perturbation theory
• Discovery (theoretical prediction and experimental observation) of a large-gap topological-insulator class with spin-polarized single-Dirac-cone on the surface
• Discovery of a Weyl Fermion Semimetal and Topological Fermi Arcs
• Discovery of a Three-dimensional Topological Dirac Semimetal, Na3Bi
• Weyl semimetal phase in non-centrosymmetric transition metal monophosphides
• Spintronics and Pseudospintronics in Graphene and Topological Insulators
• Observation of Weyl nodes in TaAs
• Dirac Cone Protected by Non-Symmorphic Symmetry and 3D Dirac Line Node in ZrSiS
• Topological nodal-line fermions in ZrSiSe and ZrSiTe
• Large nonsaturating magnetoresistance and signature of non-degenerate Dirac nodes in ZrSiS
• Two-Dimensional Oxide Topological Insulator With Iron-Pnictide Superconductor LiFeAs Structure
• Sharp Raman Anomalies and Broken Adiabaticity at a Pressure Induced Transition from Band to Topological Insulator in Sb2Se3
• Raman scattering in transition metal dichalcogenides MTe2 (M = Mo, W)
• Temperature-dependent nonlinear phonon shifts in a supported MoS2 monolayer
• Flat optical conductivity in ZrSiS due to two-dimensional Dirac bands
• Emergence of topological bands on the surface of ZrSnTe crystal
• Phase Stability and Thermoelectric Properties of the Mineral FeS2: An Ab Initio Study
• Optical phonon dynamics and electronic fluctuations in the Dirac semimetal Cd3As2
• First-principles study of excitonic effects in Raman intensities
• A Raman study of the temperature and magnetic field dependence of electronic and lattice properties in MnSi
• Enhanced quasiparticle dynamics of quantum well states: the giant Rashba system BiTeI and topological insulators
• Polarization analysis of first- and second-order Raman scattering from MoTe${}_2$ single crystal

Cited by in corpus (12)

• Topological Semimetals in Square-Net Materials
• Chemical pressure effect on the optical conductivity of the nodal-line semimetals ZrSi$Y$ ($Y$=S, Se, Te) and ZrGe$Y$ ($Y$=S, Te)
• Possible pressure-induced topological quantum phase transition in the nodal line semimetal ZrSiS
• Experimental evidence of crystal symmetry protection for the topological nodal line semimetal state in ZrSiS
• Indications for Lifshitz transitions in the nodal-line semimetal ZrSiTe induced by interlayer interaction
• Infrared spectroscopy study of the nodal-line semimetal candidate ZrSiTe under pressure: Hints for pressure-induced phase transitions
• Electron-phonon interaction and zero-field charge carrier transport in the nodal-line semimetal ZrSiS
• Pressure-induced excitations in the out-of-plane optical response of the nodal-line semimetal ZrSiS
• Quasiparticle interference observation of the topologically non-trivial drumhead surface state in ZrSiTe
• Lattice dynamics of topological Dirac semimetal LaAgSb${}_2$ with charge density wave ordering
• Electron-phonon Coupling and Kohn Anomaly due to the Floating 2D Electronic Bands on the Surface of ZrSiS
• Comprehensive investigation of Quantum Oscillations in Semimetal Using an ac Composite Magnetoelectric Technique with Ultrahigh Sensitivity