Directional Forces by Momentumless Excitation and Order-to-Order Transition in Peierls-Distorted Solids The Case of GeTe

doi:10.1103/PhysRevLett.120.185701

CIOMP OpenIR

	Directional Forces by Momentumless Excitation and Order-to-Order Transition in Peierls-Distorted Solids The Case of GeTe
	Chen, N. K.; Li, X. B.; Bang, J.; Wang, X. P.; Han, D.; West, D.; Zhang, S. B.; Sun, H. B.
	2018
发表期刊	Physical Review Letters
ISSN	0031-9007
卷号	120 期号:18 页码:5
摘要	Time-dependent density-functional theory molecular dynamics reveals an unexpected effect of optical excitation in the experimentally observed rhombohedral-to-cubic transition of GeTe. The excitation induces coherent forces along [001], which may be attributed to the unique energy landscape of Peierls-distorted solids. The forces drive the A(lg) optical phonon mode in which Ge and Te move out of phase. Upon damping of the A(1)g mode, phase transition takes place, which involves no atomic diffusion, defect formation, or the nucleation and growth of the cubic phase.
关键词	total-energy calculations phase-change materials wave basis-set optical-properties efficient pseudopotentials ferroelectrics phonons gap Physics
DOI	10.1103/PhysRevLett.120.185701
收录类别	SCI ; EI
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/60955
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	Chen, N. K.,Li, X. B.,Bang, J.,et al. Directional Forces by Momentumless Excitation and Order-to-Order Transition in Peierls-Distorted Solids The Case of GeTe[J]. Physical Review Letters,2018,120(18):5.
APA	Chen, N. K..,Li, X. B..,Bang, J..,Wang, X. P..,Han, D..,...&Sun, H. B..(2018).Directional Forces by Momentumless Excitation and Order-to-Order Transition in Peierls-Distorted Solids The Case of GeTe.Physical Review Letters,120(18),5.
MLA	Chen, N. K.,et al."Directional Forces by Momentumless Excitation and Order-to-Order Transition in Peierls-Distorted Solids The Case of GeTe".Physical Review Letters 120.18(2018):5.

条目包含的文件		下载所有文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
Directional Forces b（1679KB）	期刊论文	出版稿	开放获取	CC BY-NC-SA	浏览下载