北京师范大学学报（自然科学版）2023，Vol.59Issue(6)：887-892,6.DOI:10.12202/j.0476-0301.2023191
LaAlO3/KTaO3(111)界面超导的单轴应变调控研究
Tuning superconductivity of LaAlO3/KTaO3(111)interface by uniaxial strain
摘要
Abstract
Oxide heterostructure interface material based on KTaO3 is a key area of research in condensed matter physics,especially of discovery of its superconductivity.Uniaxial strain technology has been widely applied in unconventional superconductors,to obtain important information on superconductivity and other related quantum order parameters by studying changes in physical properties after applying strain in different crystal orientations.The present work applies uniaxial strain technology to tune interface superconductivity of amorphous LaAlO3/KTaO3(111).Critical transition temperature of superconductivity is found to increase with increased tensile strain and to decrease with increased compressive strain along the<11(2)>direction.The Curie-Weiss type divergence of elastoresistivity coefficient indicates anisotropic superconductivity at KTaO3 interface.This is of great scientific significance to understand the physical essence of superconductivity in KTaO3-based interface system.关键词
LaAlO3/KTaO3/界面超导/单轴应变Key words
LaAlO3/KTaO3/interface superconductivity/uniaxial strain分类
数理科学引用本文复制引用
杨文龙,赵强,王雪妍,陈星宇,陈美慧,朱芳慧,陈承雪,聂家财..LaAlO3/KTaO3(111)界面超导的单轴应变调控研究[J].北京师范大学学报（自然科学版）,2023,59(6):887-892,6.基金项目
国家自然科学基金资助项目(92065110) （92065110）
