2020年8月24日 · 1 T -TaS 2 undergoes successive phase transitions upon cooling and eventually enters an insulating state of mysterious origin. Some consider this state to be a band insulator with interlayer...

2008年11月9日 · Here, we show the appearance of a series of low-temperature electronic states in 1T-TaS 2 with pressure: the Mott phase melts into a textured charge-density wave (CDW); superconductivity develops...

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 …

2024年5月20日 · 近年来，TaS2兼具莫特(Mott)绝缘态、电荷密度波(CDW)和超导态等丰富物态，是探究关联拓扑电子及其演变的理想材料。 在过去的40年中，1T相TaS2(1T-TaS2)绝缘态的本质是一个长期存在争议的问题。

2024年12月18日 · 近日，复旦大学光电研究院/材料科学系褚君浩院士-黄海青年研究员团队在Nano Letters发表了关于1T-TaS2电荷密度波相变机制的研究论文，题为“Current-Driven to Thermally Driven Multistep Phase Transition of Charge Density Wave Order in 1T-TaS2”。

Tantalum(IV) sulfide is an inorganic compound with the formula Ta S 2.It is a layered compound with three-coordinate sulfide centres and trigonal prismatic or octahedral metal centres. [2] It is structurally similar to molybdenum disulfide MoS 2, and numerous other transition metal dichalcogenides.Tantalum disulfide has three polymorphs 1T-TaS2, 2H-TaS2, and 3R-TaS2, representing trigonal ...

2022年4月3日 · We report memristive phase switching in nano-thick crystals of 1T-type tantalum disulfide (1T-TaS2), a first-order phase transition system. The ordering kinetics of the phase transition were found to become extremely slow as the thickness is reduced, resulting in an emergence of metastable states.

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.

1T-TaS2 possesses complex electronic phase behaviors in transition-metal di-chalcogenides, undergoing several charge-ordered phases before finally into an insulating state of unknown origin. Here, the authors determine its electronic and structural properties experimentally, revealing its origin.

1T-TaS 2 is unique among transition metal dichalcogenides in that it is understood to be a correlation-driven insulator, where the unpaired electron in a 13-site cluster experiences enough correlation to form a Mott insulator.