Pressure-tuned one- to quasi-two-dimensional structural phase transition and superconductivity in LiP15

Pressure-Driven Structural and Electronic Transitions in a Two-Dimensional Janus WSSe Crystal

“…The crystalline structure and electrical configuration of TMDs can be effectively manipulated by the internal and external stimuli, such as temperature, pressure, light, electric field, magnetic field, and so forth. ,− Among these approaches, high pressure has been proven as a clean and maneuverable manner, giving rise to plenteous novel physical phenomena, including the pressure-induced structural transition, amorphization, metallization, and superconductivity. ,− Despite the fact that tremendous efforts have been devoted to individual molybdenum-based and tungsten-based TMDs, only one available high-pressure investigation on the structural stability and electrical transport behaviors for ternary Janus TMD has been reported to date. ,− ,− , Bera et al studied the high-pressure structural, vibrational, and electronic properties of MoSSe up to 30.0 GPa using a diamond anvil cell (DAC) by means of synchrotron X-ray diffraction, Raman spectroscopy, and first-principles theoretical calculations . The authors revealed that MoSSe experienced a low-pressure phase transition at ∼3.0 GPa, followed by an isostructural phase transition (IPT) from the 2 H c ’ phase to the mixture of the 2 H c ’ and 2 H a ’ phases at ∼10.8 GPa triggered by the layer sliding.…”

First-Principles Studies on Ultrafast Ionic Transport through van der Waals Solid Electrolytes of YX3 (X = Cl, Br, I) with Quasi-One-Dimensional Atomic Pore Channels

“…Low-dimensional organic materials or inorganic van der Waals (vdW) systems possess great potentials as solid electrolytes with possibly high ionic conductivity due to their natural vdW interlayer gaps, free dangling bonds, and even atomic pores in some systems. , Our previous work has proven that a series of two-dimensional (2D) materials with natural atomic pores possess ultrafast ionic transport character. For example, macrocyclic crown ethers (CEs) with tunable cavity size and selective sites for binding metal ions are suitable candidates for 2D solid electrolytes .…”

Novel Topological Motifs and Superconductivity in Li-Cs System

“…Pressure, as a thermodynamic parameter, can not only be used to dramatically alter the atomic and electronic structure of materials, making a rich phase diagram and thus exhibiting exotic physical or chemical properties − but also to design novel functional materials not accessible under normal conditions, enriching the realms of superconductivity, − photovoltaic materials, , superhardness, − and high energy density. , Alkali metals, long thought to be “simple”, display nontrivial behavior under pressure . Of these metals, lithium, as the “simplest” metal under ambient conditions, undergoes a series of symmetry-breaking phase transitions under compression, exhibiting anomalous electronic properties, including s–p orbital mixing, superconductivity, , and highly counterintuitive metal-to-semiconductor transitions. , Na enters a wide-gap insulating state above 180 GPa, becoming transparent to visible light .…”