Atomic‐Scale Tracking Topological Phase Transition Dynamics of Polar Vortex‐Antivortex Pairs

Author:

Zhu Ruixue1,Zheng Sizheng2,Li Xiaomei13,Wang Tao1,Tan Congbing4ORCID,Yu Tiancheng1,Liu Zhetong1,Wang Xinqiang56,Li Jiangyu78ORCID,Wang Jie29ORCID,Gao Peng16

Affiliation:

1. Electron Microscopy Laboratory and International Center for Quantum Materials School of Physics Peking University Beijing 100871 China

2. Department of Engineering Mechanics Zhejiang University Hangzhou Zhejiang 310027 China

3. School of Integrated Circuits East China Normal University Shanghai 200241 China

4. Hunan Provincial Key Laboratory of Intelligent Sensors and Advanced Sensor Materials School of Physics and Electronics Hunan University of Science and Technology Xiangtan Hunan 411201 China

5. State Key Laboratory of Artificial Microstructure and Mesoscopic Physics School of Physics Peking University Beijing 100871 China

6. Collaborative Innovation Centre of Quantum Matter Beijing 100871 China

7. Guangdong Provincial Key Laboratory of Functional Oxide Materials and Devices Southern University of Science and Technology Shenzhen Guangdong 518055 China

8. Department of Materials Science and Engineering Southern University of Science and Technology Shenzhen, Guangdong 518055 China

9. Zhejiang Laboratory Hangzhou 311100 China

Abstract

AbstractNon‐trivial topological structures, such as vortex‐antivortex (V‐AV) pairs, have garnered significant attention in the field of condensed matter physics. However, the detailed topological phase transition dynamics of V‐AV pairs, encompassing behaviors like self‐annihilation, motion, and dissociation, have remained elusive in real space. Here, polar V‐AV pairs are employed as a model system, and their transition pathways are tracked with atomic‐scale resolution, facilitated by in situ (scanning) transmission electron microscopy and phase field simulations. This investigation reveals that polar vortices and antivortices can stably coexist as bound pairs at room temperature, and their polarization decreases with heating. No dissociation behavior is observed between the V‐AV phase at room temperature and the paraelectric phase at high temperature. However, the application of electric fields can promote the approach of vortex and antivortex cores, ultimately leading to their annihilation near the interface. Revealing the transition process mediated by polar V‐AV pairs at the atomic scale, particularly the role of polar antivortex, provides new insights into understanding the topological phases of matter and their topological phase transitions. Moreover, the detailed exploration of the dynamics of polar V‐AV pairs under thermal and electrical fields lays a solid foundation for their potential applications in electronic devices.

Publisher

Wiley

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3