In-situ spectroscopic studies and interfacial engineering on FeSe/oxide heterostructures: Insights on the interfacial superconductivity  

作　　者：彭瑞 徐海超 封东来 

机构地区：[1]State Key Laboratory of Surface Physics, Department of Physics, Fudan University [2]Advanced Materials Laboratory, Fudan University

出　　处：《Chinese Physics B》2015年第11期30-42,共13页中国物理B（英文版）

基　　金：supported by the National Natural Science Foundation of China and the National Basic Research Program of China(Grant Nos.2012CB921402,2011CB921802,and 2011CBA00112)

摘　　要：The discovery of high temperature superconductivity in single-layer FeSe/SrTiO3 provides a new platform for ex- ploring superconductivity and pursuing higher Tc （superconducting transition temperature） through fabricating artificial heterostructures. In this paper, we review the recent progress in studying and tuning the interfacial superconductivity in single-layer FeSe, through the combined in-situ spectroscopic studies and atomic-scale engineering. By fabricating arti- ficial heterostructures, various interfacial factors were tuned, and the corresponding evolutions of electronic structure and superconducting gap behavior were investigated. These studies enrich the current understanding on the interfacial superconductivity, and provide clues for further enhancing Tc through interface engineering.The discovery of high temperature superconductivity in single-layer FeSe/SrTiO3 provides a new platform for ex- ploring superconductivity and pursuing higher Tc （superconducting transition temperature） through fabricating artificial heterostructures. In this paper, we review the recent progress in studying and tuning the interfacial superconductivity in single-layer FeSe, through the combined in-situ spectroscopic studies and atomic-scale engineering. By fabricating arti- ficial heterostructures, various interfacial factors were tuned, and the corresponding evolutions of electronic structure and superconducting gap behavior were investigated. These studies enrich the current understanding on the interfacial superconductivity, and provide clues for further enhancing Tc through interface engineering.

关 键 词：single-layer FeSe high temperature superconductivity interface spectroscopic study 

分 类 号：O511.3[一般工业技术—材料科学与工程] O484[理学—低温物理]