期刊
JOURNAL OF APPLIED PHYSICS
卷 117, 期 16, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4919756
关键词
-
资金
- National Research Foundation of Korea (NRF) - Korean government [2113R1A2A2A01067707, 2012R1A1A2000968, NRF-2008-0062256]
- Chungnam National University
- National Research Foundation of Korea [2012R1A1A2000968, 2013R1A2A2A01067707, 2008-0061906] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
With performing time-resolved pump-probe experiments using femtosecond optical pulses, we investigate temperature dependent transition of the structural phase in single crystalline (SC) VO2 plates and polycrystalline films. Analysis of coherent optical phonons with the temperature change has revealed the M1-M2 transition within the insulating phase of the SC VO2. In stark contrast, no evidence on the M2 phase was found in a VO2 film composed of multi-grains. The results demonstrate that the strain is an important parameter in the structural transitions of VO2, which determines not only the appearance of the intermediate M2 phase but also the transition temperatures. (C) 2015 AIP Publishing LLC.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据