童浩

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Personal information

教授     博士生导师    

所在单位:集成电路学院

学历:研究生(博士)毕业

学位:工学博士学位

毕业院校:华中科技大学

学科:微电子学与固体电子学
曾获荣誉:
2024    华中科技大学青年五四奖章
2022    华为奥林帕斯先锋奖
2020    湖北省技术发明一等奖(排名第2)
2013    湖北省年度“十大科技事件”
2013    湖北省优秀博士学位论文
2014    湖北省优秀学士学位论文指导教师
2015    华中科技大学教师教学竞赛二等奖
2017    华中科技大学光学与电子信息学院“我最喜爱的教师班主任“
2020    华中科技大学光学与电子信息学院突出贡献一等奖

Insulator-metal transition in GeTe/Sb2Te3 multilayer induced by grain growth and interface barrier
发布时间:2023-08-21  点击次数:

论文类型:期刊论文
第一作者:童浩
通讯作者:缪向水
合写作者:程晓敏,杨哲
发表刊物:Applied Physics Letters
所属单位:华中科技大学
学科门类:工学
一级学科:电子科学与技术
文献类型:J
卷号:99
期号:21
页面范围:212105
DOI码:10.1063/1.3664132
发表时间:4086-12-01
摘要:Unlike its two components, the temperature coefficient of resistivity (TCR) of GeTe/Sb2Te3 multilayer (ML) increases from negative to positive on annealing, indicating an insulator-metal transition (IMT). Impedance spectroscopy measurements demonstrate that the grain boundary resistance (negative TCR) determines the total resistance of initial ML. As grain grows, which is confirmed by x-ray diffraction, scanning electron microscope, and optical reflectivity measurements, the contribution of grain resistance (positive TCR) increases gradually to the leading part and finally accomplishes the IMT in a sufficiently crystallized film. Furthermore, the artificially introduced interfaces form additional potential barrier in ML and also modulate its IMT behavior
发布期刊链接:https://pubs.aip.org/aip/apl/article-abstract/99/21/212105/150963/Insulator-metal-transition-in-GeTe-Sb2Te3?redirectedFrom=fulltext