2021年7月7日 · The nearly commensurate charge density wave (CDW) excitations native to the transition-metal dichalcogenide crystal, 1T-TaS 2, under ambient conditions are revealed by scanning tunneling microscopy (STM) and spectroscopy (STS) measurements of a graphene/TaS 2 heterostructure.

2016年3月17日 · Tantalum disulphide (TaS 2) is another member of the TMDC family. In its bulk state, TaS 2 is composed of robust covalently bonded S–Ta–S planes that stack upon each other.

5 天之前 · Bulk 1T-TaS 2 is found to be a non-magnetic insulator at low temperature. It is commonly accepted that the mechanism behind the insulating behavior is Mott physics driven by Coulomb repulsion 11 ...

1994年5月10日 · Investigating 1T-TaS 2 with an STM we found that its bulk hexagonal lattice bears the inherent tendency to a slow and irregular degradation of the surface. The onset of this degradation is triggered by any electrical current above a minimum density.

2023年8月18日 · We have provided evidence for unconventional nodal superconductivity in ultra-clean monolayer 1H-TaS 2 by means of STM and STS measurements. In particular, we have demonstrated three genuine signatures of an unconventional superconducting state: a nodal V-shaped superconducting gap incompatible with a BCS gap, many-body excitations around the ...

2020年1月6日 · Our results indicate that electron correlation induces a robust Mott insulator state in single-layer 1T-TaSe 2 that is accompanied by unusual orbital texture. Interlayer coupling weakens the...

2023年7月18日 · The influence of intrinsic defects of 1T-TaS2 on charge density waves (CDWs) is studied using scanning tunneling microscopy and spectroscopy (STM, STS), angle-resolved photoelectron spectroscopy (ARPES), and density functional theory (DFT).

2019年12月23日 · Combining the molecular beam epitaxy growth, scanning tunneling microscopy measurements and first-principles calculations, we prepare monolayer 1T-TaS 2 and TaSe 2 and explore their electronic structures at the atomic scale. Both two-dimensional (2D) compounds exhibit commensurate charge density wave phase at low temperature.

We prepare monolayers of tantalum sulfide on Au (111) evaporation of Ta in a reactive background of H 2 S. Under sulfur-rich conditions monolayers of 2H-TaS 2 develop, whereas under sulfur-poor...

Spectroscopic STM measurements on 4Hb-TaS 2 single crystals have found that inter-layer hybridization results in shifting the Hubbard bands to above the Fermi energy [26].