“针尖下的实验室”——扫描探针探测与调控铁电畴及其微观物性  

Laboratory experiments based on tip probe-Scanning probe detection and regulation of ferroelectric domains and their microscopic physical properties

作　　者：田国 樊贞 陈德杨 侯志鹏 刘俊明 高兴森[1] Tian Guo;Fan Zhen;Chen De-Yang;Hou Zhi-Peng;Liu Jun-Ming;Gao Xing-Sen(Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials and Institute for Advanced Materials,South China Academy of Optoelectronics,South China Normal University,Guangzhou 510006,China;National Laboratory of Solid State Microstructures,Nanjing University,Nanjing 210093,China)

机构地区：[1]华南师范大学,华南先进光电子研究院,先进材料研究所及量子调控工程与材料广东省重点实验室,广州510006 [2]南京大学,固体微结构物理国家重点实验室,南京210093

出　　处：《物理学报》2023年第20期99-113,共15页Acta Physica Sinica

基　　金：国家重点研发计划(批准号:2022YFB3807603);国家自然科学基金(批准号:U22A20117,52002134,92163210);广东省科技计划(批准号:202201000008);“香江学者”计划(批准号:XJ2022004)资助的课题.

摘　　要：铁电和多铁材料作为未来高性能信息媒介引起广泛关注.其中铁电畴的形态及演化特征可显著影响材料电导、光伏、磁电耦合等诸多物理性能以及器件功能,尤其是新奇拓扑畴带来诸多新颖物性,使得通过畴调控方法设计材料及器件性能成为可能.深入理解铁电畴及其微观物性调控规律有望为后摩尔时代信息技术带来新的器件设计方案.本文主要介绍通过多功能扫描探针显微镜研究铁电和多铁材料的微观畴结构和相关物理性能,及其调控规律和机制,并在此基础上构筑新原理信息器件.Ferroelectric and multiferroic materials have gained significant attention due to their potential applications in investigating emergent cross-coupling phenomena among spin,charge,orbit,and lattice in correlated electron systems,as well as promising candidates for prospective applications in advanced industries,e.g.data memory/processing,sensors,actuators,and energy-relevant devices.The structure and dynamic characteristics of ferroelectric domains can significantly affect the physical properties and device functions of materials,such as electrical conductivity,photovoltaics,and magnetoelectric coupling,particularly,novel topological domains can bring many new physical properties.These make it possible to design materials and devices through domain engineering methods.Therefore,exploring the microdomain structures and related physical property is expected to bring new material and device solutions for post-Moore's era information technology.Accurate understanding of domain structures and their corresponding functionalities pose challenges to characterization techniques.In particular,it remains challenging to investigate the dynamics and cross-coupling behaviors on a nanoscale in situ.Nowadays,it is worthwhile to pay more attention to the multifunctional scanning probe microscopy technique,as it serves as a versatile and powerful nanoscale probe capable of exploring multifunctionalities.Multi-field stimulation such as electric field,magnetic field,light illumination,strain field,and thermal field can be combined with the advanced scanning probe microscopy technique,making it an ideal platform for in-situ manipulation of domain structure and its related functional response on a nano-scale.In this study,we give a brief overview on the recent advances in our research group in detection and manipulation of ferroelectric domains and microscopic physical properties through multifunctional scanning probe microscopy technique.Special attention is paid to those topological domain structures such as vortex,center domain sta

关 键 词：扫描探针显微镜 铁电畴 拓扑畴 电场驱动磁翻转 信息存储器件 

分 类 号：O469[理学—凝聚态物理]