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...

2020年5月18日 · Here, scanning tunnelling microscopy reveals two distinct terminations of the charge order in 1 T -TaS 2, the sign of such a double-layer stacking pattern. However, spectroscopy at both...

2024年4月23日 · In this study, we present a unique approach to unlock the intertwined two-dimensional Mott-insulator and three-dimensional band-insulator states in bulk 1T-TaS 2 …

2022年7月19日 · In this article, we review the recent progress of the scanning tunneling microscopy studies of 1T-TaS2 and 1T-TaSe2 for bulk single crystals and molecular beam epitaxy monolayer films. We focus on how to understand the Mott insulating state in the whole set of materials, even when the stacking order takes effect.

2019年12月23日 · The isostructural and isoelectronic transition-metal-dichalcogenides 1T-TaS2 and 1T-TaSe2 are layered materials with intricate electronic structures. Combining the molecular beam epitaxy growth, scanning tunneling microscopy measurements and first-principles calculations, we prepare monolayer 1T-TaS2 and TaSe2 and explore their electronic ...

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 ...

2022年4月3日 · Using scanning tunneling microscopy (STM), the authors studied 1T-TaS2 in all four of its charge-d.-wave (CDW) supporting phases over the temp. range 360-143 K. Special attention was given to the search for discommensurate structures and the distinguishing of true CDW discommensurations and domains from apparent discommensurations and domains ...

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.

2024年6月12日 · Here, we use scanning tunneling microscopy and spectroscopy (STM/S) to investigate the charge ordered phases of 1T-TaS2 layers within 4Hb-TaS2, explicitly focusing on the non-half-filled regime. Our STS results show an energy gap which exhibits an out-of-phase relation with the charge density.

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.