Observation of pressure induced charge density wave order and eightfold structure in bulk VSe2

被引：6

作者：

Guo, Zhiying ^{[1
]}

Hao, Xingyu ^{[1
,2
]}

Dong, Juncai ^{[1
]}

Li, Haijing ^{[1
,2
]}

Liao, Jiangwen ^{[1
,2
]}

Chen, Dongliang ^{[1
]}

机构：

[1] Chinese Acad Sci, Beijing Synchrotron Radiat Facil, Inst High Energy Phys, Beijing 100049, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100042, Peoples R China

来源：

SCIENTIFIC REPORTS | 2021年 / 11卷 / 01期

基金：

中国国家自然科学基金;

关键词：

INITIO MOLECULAR-DYNAMICS; TRANSITION; METAL; FERROMAGNETISM; DISELENIDE; NANOSHEETS;

D O I：

10.1038/s41598-021-97630-8

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Pressure-induced charge density wave (CDW) state can overcome the low-temperature limitation for practical application, thus seeking its traces in experiments is of great importance. Herein, we provide spectroscopic evidence for the emergence of room temperature CDW order in the narrow pressure range of 10-15 GPa in bulk VSe2. Moreover, we discovered an 8-coordination structure of VSe2 with C2/m symmetry in the pressure range of 35-65 GPa by combining the X-ray absorption spectroscopy, X-ray diffraction experiments, and the first-principles calculations. These findings are beneficial for furthering our understanding of the charge modulated structure and its behavior under high pressure.

引用

页数：9

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