Remnant Fermi surface in the presence of an underlying instability in layered 1T-TaS_2

Abstract

We report high resolution angle-scanned photoemission and Fermi surface (FS) mapping experiments on the layered transition-metal dichalcogenide 1T-TaS_2 in the quasi commensurate (QC) and the commensurate (C) charge-density-wave (CDW) phase. Instead of a nesting induced partially removed FS in the CDW phase we find a pseudogap over large portions of the FS. This remnant FS exhibits the symmetry of the one-particle normal state FS even when passing from the QC-phase to the C-phase. Possibly, this Mott localization induced transition represents the underlying instability responsible for the pseudogapped FS.

References in corpus (3)

• Destruction of the Fermi Surface in Underdoped High Tc Superconductors
• Photoemission Evidence for a Remnant Fermi Surface and d-Wave-Like Dispersion in Insulating Ca2CuO2Cl2
• Evolution of the Fermi surface with carrier concentration in Bi_2Sr_2CaCu_2O_{8+δ}

Cited by in corpus (14)

• Gate-tunable Phase Transitions in 1T-TaS${}_2$
• Orbital textures and charge density waves in transition metal dichalcogenides
• Pseudogap from ARPES experiment: three gaps in cuprates and topological superconductivity
• Femtosecond "snapshots "of gap-forming charge-density-wave correlations in quasi-two-dimensional dichalcogenides 1T-TaS2 and 2H-TaSe2
• Disrupted orbital order and the pseudo-gap in layered 1T-TaS${}_2$
• Evolution of the Electronic Structure of 1T-CuxTiSe2
• Fermi surface induced lattice distortion in NbTe${}_2$
• Heat transport study of the spin liquid candidate 1T-TaS2
• Quasi one-dimensional metallic band dispersion in the commensurate charge density wave of $1T$-TaS${}_2$
• Theoretical description of time-resolved pump/probe photoemission in TaS\_2: a single-band DFT+DMFT(NRG) study within the quasiequilibrium approximation
• Coupling between Charge, Lattice, Orbital, and Spin in a Charge Density Wave of 1$T$-TaS${}_2$
• Phase Separation in the Vicinity of Fermi Surface Hot Spots
• Electron delocalization in a 2D Mott insulator
• Electronic inhomogeneity in Cs- and Sb-terminated surfaces of CsV${}_3$Sb${}_5$ probed by scanning photoemission spectromicroscopy