標題: Photostriction of strontium ruthenate
作者: Wei, Tzu-Chiao
Wang, Hsin-Ping
Liu, Heng-Jui
Tsai, Dung-Sheng
Ke, Jr-Jian
Wu, Chung-Lun
Yin, Yu-Peng
Zhan, Qian
Lin, Gong-Ru
Chu, Ying-Hao
He, Jr-Hau
材料科學與工程學系
Department of Materials Science and Engineering
公開日期: 24-Apr-2017
摘要: Transition metal oxides with a perovskite crystal structure exhibit a variety of physical properties associated with the lattice. Among these materials, strontium ruthenate (SrRuO3) displays unusually strong coupling of charge, spin and lattice degrees of freedom that can give rise to the photostriction, that is, changes in the dimensions of material due to the absorption of light. In this study, we observe a photon-induced strain as high as 1.12% in single domain SrRuO3, which we attribute to a nonequilibrium of phonons that are a result of the strong interaction between the crystalline lattice and electrons excited by light. In addition, these light-induced changes in the SrRuO3 lattice affect its electrical resistance. The observation of both photostriction and photoresistance in SrRuO3 suggests the possibility of utilizing the mechanical and optical functionalities of the material for next-generation optoelectronics, such as remote switches, light-controlled elastic micromotors, microactuators and other optomechanical systems.
URI: http://dx.doi.org/10.1038/ncomms15108
http://hdl.handle.net/11536/145433
ISSN: 2041-1723
DOI: 10.1038/ncomms15108
期刊: NATURE COMMUNICATIONS
Volume: 8
起始頁: 0
結束頁: 0
Appears in Collections:Articles


Files in This Item:

  1. 2243539eab679a51b572a4c88d9d03d5.pdf