Crystal growth, characterization and electronic band structure of TiSeS

Abstract

Layered semimetallic van der Waals materials TiSe2 has attracted a lot of attention because of interplay of a charge density wave (CDW) state and superconductivity. Its sister compound TiS2, being isovalent to TiSe2 and having the same crystal structure, shows a semiconducting behavior. The natural rises what happens at the transition point in TiSe2-xSx, which is expected for x close to 1. Here we report the growth and characterization of TiSeS single crystals and the study of the electronic structure using density functional theory (DFT) and angle-resolved photoemission (ARPES). We show that TiSeS single crystals have the same morphology as TiSe2. Transport measurements reveal a metallic state, no evidence of CDW was found. DFT calculations suggest that the electronic band structure in TiSeS is similar to that of TiSe2, but the electron and hole pockets in TiSeS are much smaller. The ARPES results are in good agreement with the calculations.

arXiv comment22 pages, 9 figures

References in corpus (16)

• Discovery of intrinsic ferromagnetism in 2D van der Waals crystals
• Two-Dimensional Material Nanophotonics
• Superconductivity in Weyl Semimetal Candidate MoTe2
• CDW, Superconductivity and Anomalous Metallic Behavior in 2D Transition Metal Dichalcogenides
• Controlling many-body states by the electric-field effect in a two-dimensional material
• Electronic Transport in Two-Dimensional Materials
• Electronic properties of single-layer and multilayer transition metal dichalcogenides $M{X}_2$ ($M=$ Mo, W and $X=$ S, Se)
• Topological superconductivity in monolayer transition metal dichalcogenides
• Two-Dimensional Ferroelastic Topological Insulators in Single-Layer Janus Transition Metal Dichalcogenides MSSe (M=Mo, W)
• Simple model for second-order topological insulators and loop-nodal semimetals in Transition Metal Dichalcogenides XTe${}_2$ (X=Mo,W)
• Magnetic Anisotropy and Low Field Magnetic Phase Diagram of Quasi Two-Dimensional Ferromagnet Cr${}_2$Ge${}_2$Te${}_6$
• Semimetal-to-semiconductor transition and charge-density-wave melting in $1T$-TiSe${}_{2-x}$S${}_x$ single crystals
• Intrinsic Insulating Ground State in Transition Metal Dichalcogenide TiSe2
• Defect-induced magnetism in TiO${}_2$: An example of quasi 2D magnetic order with perpendicular anisotropy
• Van der Waals Schottky barriers as interface probes of the correlation between chemical potential shifts and charge density wave formation in 1T-TiSe${}_2$ and 2H-NbSe${}_2$
• The maximal superconductivity in proximity to charge density wave quantum critical point in Cu${}_x$TiSe${}_2$