From Mott state to superconductivity in 1T-TaS2
TL;DR: In this article, the appearance of low-temperature electronic states in a transition metal dichalcogenide (TMD) compound with pressure was studied and it was shown that superconductivity first develops within the state marked by a commensurability-driven, Coulombically frustrated, electronic phase separation.
read more
Abstract: The search for the coexistence between superconductivity and other collective electronic states in many instances promoted the discovery of novel states of matter. The manner in which the different types of electronic order combine remains an ongoing puzzle. 1T-TaS(2) is a layered material, and the only transition-metal dichalcogenide (TMD) known to develop the Mott phase. 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 within the CDW state, and survives to very high pressures, insensitive to subsequent disappearance of the CDW state and, surprisingly, also the strong changes in the normal state. This is also the first reported case of superconductivity in a pristine 1T-TMD compound. We demonstrate that superconductivity first develops within the state marked by a commensurability-driven, Coulombically frustrated, electronic phase separation.
read more
Chat with Paper
AI Agents for this Paper
Find similar papers on Google Scholar, PubMed and Arxiv
Write a critical review of this paper
Analyze citations of this paper to find unaddressed research gaps
Citations
Electronics and optoelectronics of two-dimensional transition metal dichalcogenides.
TL;DR: This work reviews the historical development of Transition metal dichalcogenides, methods for preparing atomically thin layers, their electronic and optical properties, and prospects for future advances in electronics and optoelectronics.
The chemistry of two-dimensional layered transition metal dichalcogenide nanosheets
TL;DR: This Review describes how the tunable electronic structure of TMDs makes them attractive for a variety of applications, as well as electrically active materials in opto-electronics.
9.3K
2D transition metal dichalcogenides
TL;DR: In this article, the authors examined the methods used to synthesize transition metal dichalcogenides (TMDCs) and their properties with particular attention to their charge density wave, superconductive and topological phases, along with their applications in devices with enhanced mobility and with the use of strain engineering to improve their properties.
4.9K
Raman spectroscopy of graphene-based materials and its applications in related devices.
TL;DR: The essential Raman scattering processes of the entire first- and second-order modes in intrinsic graphene are described and the extensive capabilities of Raman spectroscopy for the investigation of the fundamental properties of graphene under external perturbations are described.
Two-dimensional semiconductors for transistors
TL;DR: In this article, a mathematical framework to evaluate the performance of FETs and describe the challenges for improving the performances of short-channel FET in relation to the properties of 2D materials, including graphene, transition metal dichalcogenides, phosphorene and silicene.
1.3K
References
Similarities between organic and cuprate superconductors
TL;DR: McKenzie as mentioned in this paper discusses this question in his Perspective and reviews recent theoretical and experimental progress, showing that organic superconductors have a highly unconventional metallic state and exhibit much the same physics as the cuprates.
Theory of Three-Dimensional Orderings of Charge-Density Waves in 1T-TaX2 (X: S, Se)
Kazuo Nakanishi,Hiroyuki Shiba +1 more
TL;DR: In this article, the three-dimensional structures of charge-density waves in 1T-Ta dichalcogenides are studied on the basis of a phenomenological free energy, in which interlayer couplings up to the second neighbor layer are considered.
Questions concerning the form taken by the charge-density wave and the accompanying periodic-structural distortions in 2 H − T a Se 2 , and closely related materials
TL;DR: In this paper, an attempt has been made to understand the detailed form and phasing taken by the periodic-structural distortions (PSD) as developed in the various charge-density-wave bearing materials.
Voltage-dependent stm image of a charge density wave
TL;DR: In this paper, a general expression for the local density of states (LDOS) due to a commensurate charge density wave (CDW) was proposed, and the voltage dependence of the contrast in the scanning tunneling microscope images of materials showing CDW's was investigated.