典型文献
Two-Dimensional Electron Gas with High Mobility Forming at BaO/SrTiO3 Interface
文献摘要：
Two-dimensional electron gas(2DEG)with high electron mobility is highly desired to study the emergent prop-erties and to enhance future device performance.Here we report the formation of 2DEG with high mobility at the interface between rock-salt BaO and perovskite SrTiO3.The interface consists of the ionically compensated BaO1-δ layer and the electronically compensated TiO2 layer,which is demonstrated as a perfect interface with-out lattice mismatch.The so-formed interface features metallic conductivity with ultralow square resistance of 7.3×10-4 Ω/□ at 2K and high residual resistance ratios R300K/R2K up to 4200.The electron mobility reaches 69000 cm2·V-1·s-1 at 2K,leading to Shubnikov-de Haas oscillations of resistance.Density functional theory cal-culations reveal that the effective charge transfers from BaO to the Ti 3dxy orbital occur at the interface,leading to the conducting TiO2 layer.Our work unravels that BaO can adapt itself by removing oxygen to minimize the lattice mismatch and to provide substantial carriers to SrTiO3,which is the key to forming 2DEGs with high mobility at the interfaces.
文献关键词：
中图分类号：
作者姓名：
Cheng Cao;Shengru Chen;Jun Deng;Gang Li;Qinghua Zhang;Lin Gu;Tian-Ping Ying;Er-Jia Guo;Jian-Gang Guo;Xiaolong Chen
作者机构：
Beijing National Laboratory for Condensed Matter Physics,Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China;College of Materials Science and Opto-Electronic Technology,University of Chinese Academy of Sciences,Beijing 100049,China;School of Physical Sciences,University of Chinese Academy of Sciences,Beijing 101408,China;Songshan Lake Materials Laboratory,Dongguan 523808,China
文献出处：
引用格式：
[1]Cheng Cao;Shengru Chen;Jun Deng;Gang Li;Qinghua Zhang;Lin Gu;Tian-Ping Ying;Er-Jia Guo;Jian-Gang Guo;Xiaolong Chen-.Two-Dimensional Electron Gas with High Mobility Forming at BaO/SrTiO3 Interface)[J].中国物理快报（英文版）,2022(04):52-61
A类：
ionically,BaO1,R300K,R2K,Shubnikov,3dxy,2DEGs
B类：
Two,Dimensional,Electron,Gas,High,Mobility,Forming,SrTiO3,Interface,dimensional,gas,mobility,highly,desired,study,emergent,prop,erties,enhance,future,device,performance,Here,report,formation,between,rock,salt,perovskite,consists,compensated,layer,electronically,TiO2,which,demonstrated,perfect,out,lattice,mismatch,so,formed,features,metallic,conductivity,ultralow,square,resistance,residual,ratios,up,reaches,leading,Haas,oscillations,Density,functional,theory,culations,reveal,that,effective,charge,transfers,from,orbital,occur,conducting,Our,work,unravels,can,adapt,itself,by,removing,oxygen,minimize,provide,substantial,carriers,key,forming,interfaces
AB值：
0.512755
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机标中图分类号，由域田数据科技根据网络公开资料自动分析生成，仅供学习研究参考。
