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

Zhu, Ruixue1,2; Zheng, Sizheng3; Li, Xiaomei1,2,4; Wang, Tao1,2; Tan, Congbing5; Yu, Tiancheng1,2; Liu, Zhetong1,2; Wang, Xinqiang6,7; Li, Jiangyu8,9; Wang, Jie3,10; Gao, Peng1,2,7

2024-05-01

10.1002/adma.202312072

ADVANCED MATERIALS   影响因子和分区

0935-9648

1521-4095

["Non-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.","The topological phase transition dynamics of polar vortex-antivortex (V-AV) pairs under thermal and electric fields are revealed at the atomic scale using in situ transmission electron microscopy. Upon heating, no dissociation-like behavior of polar V-AV pairs is observed, and the antivortex disappears prior to the vortex. Electric fields can facilitate the approach of adjacent vortex and antivortex cores, leading to their annihilation. image"]

ferroelectrics in situ (scanning) transmission electron microscopy polar topological structures polar vortex-antivortex pairs topological phase transitions

SCI ; EI

英语

通讯

Guangdong Basic and Applied Basic Research Foundation[2023B1515130003] ; Songshan Lake Materials Laboratory["2022SLABFK03","2021SLABFN14"] ; Key-Area Research and Development Program of Guangdong Province["2018B030327001","2020B010189001"] ; Guangdong Provincial Key Laboratory Program from the Department of Science and Technology of Guangdong Province[2021B1212040001] ; National Program on Key Basic Research Project[2022YFB3807601] ; Hunan Provincial Natural Science Foundation of China[2021JJ30234] ; Scientific Research Fund of Hunan Provincial Education Department[21A0311]

Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics

Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter

WOS:001232450400001

WILEY-V C H VERLAG GMBH

MATERIALS SCIENCE

Web of Science

1.Peking Univ, Electron Microscopy Lab, Beijing 100871, Peoples R China
2.Peking Univ, Int Ctr Quantum Mat, Sch Phys, Beijing 100871, Peoples R China
3.Zhejiang Univ, Dept Engn Mech, Hangzhou 310027, Zhejiang, Peoples R China
4.East China Normal Univ, Sch Integrated Circuits, Shanghai 200241, Peoples R China
5.Hunan Univ Sci & Technol, Sch Phys & Elect, Hunan Prov Key Lab Intelligent Sensors & Adv Senso, Xiangtan 411201, Hunan, Peoples R China
6.Peking Univ, Sch Phys, State Key Lab Artificial Microstruct & Mesoscop Ph, Beijing 100871, Peoples R China
7.Collaborat Innovat Ctr Quantum Matter, Beijing 100871, Peoples R China
8.Southern Univ Sci & Technol, Guangdong Prov Key Lab Funct Oxide Mat & Devices, Shenzhen 518055, Guangdong, Peoples R China
9.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Guangdong, Peoples R China
10.Zhejiang Lab, Hangzhou 311100, Peoples R China

Zhu, Ruixue,Zheng, Sizheng,Li, Xiaomei,et al. Atomic-Scale Tracking Topological Phase Transition Dynamics of Polar Vortex-Antivortex Pairs[J]. ADVANCED MATERIALS,2024.

Zhu, Ruixue.,Zheng, Sizheng.,Li, Xiaomei.,Wang, Tao.,Tan, Congbing.,...&Gao, Peng.(2024).Atomic-Scale Tracking Topological Phase Transition Dynamics of Polar Vortex-Antivortex Pairs.ADVANCED MATERIALS.

Zhu, Ruixue,et al."Atomic-Scale Tracking Topological Phase Transition Dynamics of Polar Vortex-Antivortex Pairs".ADVANCED MATERIALS (2024).