Pressure-modulated lattice structural evolution in TiS2

Dengman Feng; Jian Zhu; Liang Li; Yalan Yan; Linlin Liu; Litong Huang; Shufan Jia; Chenxiao Zhao; Jiacheng Zhang; Xinyang Li; Qiang Zhou; Fangfei Li

doi:10.1039/D3CP03247G

Pressure-modulated lattice structural evolution in TiS₂

Dengman Feng,

^a Jian Zhu,^a Liang Li,

^a Yalan Yan,

*^b Linlin Liu,^a Litong Huang,^a Shufan Jia,^c Chenxiao Zhao,^a Jiacheng Zhang,^a Xinyang Li,^a Qiang Zhou*^a and Fangfei Li

*^a

Author affiliations

* Corresponding authors

^a Synergetic Extreme Condition High-Pressure Science Center, State Key Laboratory of Superhard Materials, College of Physics, Jilin University, China
E-mail: zhouqiang@jlu.edu.cn

^b Institute for Interdisciplinary Biomass Functional Materials Studies, Jilin Provincial Key Laboratory of Straw-Based Functional Materials, Jilin Engineering Normal University, Changchun 130052, People's Republic of China

^c Research Centre for Sensing Materials and Devices, Zhejiang Laboratory, Hangzhou 311100, P. R. China

Abstract

Titanium disulfide (TiS₂) has drawn considerable attention in materials, physics, and chemistry thanks to its potential applications in batteries, supercapatteries and thermoelectric devices. However, the simplified and controlled synthesis of high-quality TiS₂ remains a great challenge. In this study, a straightforward widely accessible approach to the one-step chemical vapor transport (CVT) process is presented. Meanwhile, combining high-pressure (HP) Raman spectroscopy measurements and first-principles calculations, the pressure-induced phase transition of TiS₂ from P [3 with combining macron] m1 phase (phase I) to C2/m phase (phase II) at 16.0 GPa and then to P [6 with combining macron] 2m phase (phase III) at 32.4 GPa was disclosed. The discovery of HP being within the Weyl semi-metallic phase represents a significant advancement towards understanding the electronic topological states, discovering new physical phenomena, developing new electronic devices, and gaining insight into the properties of elementary particles.

Physical Chemistry Chemical Physics

Pressure-modulated lattice structural evolution in TiS₂

Abstract

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Pressure-modulated lattice structural evolution in TiS₂

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