Infrared spectroscopy study of the nodal-line semimetal candidate ZrSiTe under pressure: Hints for pressure-induced phase transitions

Abstract

We studied the effect of external pressure on the optical response of the nodal-line semimetal candidate ZrSiTe by reflectivity measurements. At pressures of a few GPa, the reflectivity, optical conductivity, and loss function are strongly affected in the whole measured frequency range (200-16500 cm${}^{-1}$), indicating drastic changes in the electronic band structure. The pressure-induced shift of the electronic bands affects both the intraband and interband transitions. We find anomalies in the pressure dependence of several optical parameters at the pressures $P_{c1}$$\approx$4.1 GPa and $P_{c2}$$\approx$6.5 GPa, suggesting the occurrence of two phase transitions of either structural or electronic type.

arXiv comment5 pages, 2 figures, accepted for publication in Phys. Rev. B

References in corpus (20)

• Weyl and Dirac Semimetals in Three Dimensional Solids
• Topological nodal semimetals
• Observation of a topological 3D Dirac semimetal phase in high-mobility Cd3As2
• Topological nodal line semimetals with and without spin-orbital coupling
• Dirac Cone Protected by Non-Symmorphic Symmetry and 3D Dirac Line Node in ZrSiS
• Dirac Semimetals in Two Dimensions
• Topological nodal-line fermions in ZrSiSe and ZrSiTe
• Observation of Topological Nodal Fermion Semimetal Phase in ZrSiS
• Large nonsaturating magnetoresistance and signature of non-degenerate Dirac nodes in ZrSiS
• Electronic Evidence of Temperature-Induced Lifshitz Transition and Topological Nature in ZrTe5
• Two-Dimensional Oxide Topological Insulator With Iron-Pnictide Superconductor LiFeAs Structure
• Nearly massless Dirac fermions and strong Zeeman splitting in the nodal-line semimetal ZrSiS probed by de Haas--van Alphen quantum oscillations
• Tunability of the topological nodal-line semimetal phase in ZrSiX-type materials
• Temperature-driven Topological Phase Transition and Intermediate Dirac Semimetal Phase in ZrTe${}_5$
• Non-symmorphic band degeneracy at the Fermi level in ZrSiTe
• Extremely large and significantly anisotropic magnetoresistance in ZrSiS single crystals
• Flat optical conductivity in ZrSiS due to two-dimensional Dirac bands
• Probing lattice dynamics and electron-phonon coupling in topological nodal-line semimetal ZrSiS
• 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

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• Effect of mechanical strain on the optical properties of nodal-line semimetal ZrSiS
• Signature of an Ultrafast Photo-Induced Lifshitz Transition in the Nodal-Line Semimetal ZrSiTe
• Pressure-induced excitations in the out-of-plane optical response of the nodal-line semimetal ZrSiS
• In-plane and out-of-plane optical response of the nodal-line semimetals ZrGeS and ZrGeSe
• Optical study of the charge dynamics evolution in the topological insulators MnBi${}_2$Te${}_4$ and Mn(Bi${}_{0.74}$Sb${}_{0.26}$)${}_2$Te${}_4$ under high pressure
• Near room-temperature ferromagnetism from double-exchange in the van der Waals material CrGeTe${}_3$: evidence from optical conductivity under pressure
• Increasing the number of topological nodal lines in semimetals via uniaxial pressure