Article
Multidisciplinary Sciences
Sonka Reimers, Dominik Kriegner, Olena Gomonay, Dina Carbone, Filip Krizek, Vit Novak, Richard P. Campion, Francesco Maccherozzi, Alexander Bjorling, Oliver J. Amin, Luke X. Barton, Stuart F. Poole, Khalid A. Omari, Jan Michalicka, Ondrej Man, Jairo Sinova, Tomas Jungwirth, Peter Wadley, Sarnjeet S. Dhesi, Kevin W. Edmonds
Summary: This study reveals that the antiferromagnetic (AF) domain structure in CuMnAs thin films is dominated by nanoscale structural twin defects, which play a crucial role in determining the location and orientation of AF domain walls. The results provide insights into the interplay of crystalline defects, strain, and magnetic ordering in AF materials, offering a route to optimize device performance.
NATURE COMMUNICATIONS
(2022)
Article
Materials Science, Multidisciplinary
Hao Zhao, Run Cheng, Quan-Hui Liu
Summary: This study presents a theoretical investigation and numerical simulations of the dynamics of domain walls in a curved nanowire with torsion in an antiferromagnetic environment. The equations of motion for the antiferromagnetic domain wall are derived, revealing that the curvature induces the Dzyaloshinskii-Moriya interaction and the torsion induces an anisotropy term, both of which drive the domain wall in opposite directions in a stable state.
RESULTS IN PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Saima Afroz Siddiqui, Deshun Hong, John E. Pearson, Axel Hoffmann
Summary: Antiferromagnetic oxides have attracted attention due to their potential for manipulation of Neel vectors electrically and optically, as well as their fast spin dynamics and long spin diffusion length. This study successfully deposited Cr2O3 and α-Fe2O3 on A-plane sapphire substrates using sputtering deposition, identifying optimized conditions for epitaxial films with low surface roughness and confirming their antiferromagnetic properties. The developed deposition method will be important for studying magnon transport in these epitaxial antiferromagnetic thin films.
Article
Chemistry, Multidisciplinary
Jian Song, Mingyu Gong, Meng-fu Tsai, Youcao Ma, Houyu Ma, Yue Liu, Ying-hao Chu, Rong Huang, Jun Ouyang, Jian Wang, Tongxiang Fan
Summary: By using atomistic simulation and microscopy characterization, a pseudo-ferroelectric domain with similar morphology to a ferroelectric domain but with the same defect character as a ferroelastic domain-wall, i.e., a semi-coherent (100)(matrix)||(100)(domain) interface, is identified. Pseudo-ferroelectric domain walls play a critical role in the migration kinetics of ferroelastic domains and the piezoelectric responses of ferroelectric thin films during cyclic mechanical/electrical loading.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Yuqing Zhou, Changqing Guo, Guohua Dong, Haixia Liu, Ziyao Zhou, Ben Niu, Di Wu, Tao Li, Houbing Huang, Ming Liu, Tai Min
Summary: In this study, zigzag wrinkle morphology was fabricated on inorganic thin films to modulate ferroelectric domains and create a superstructure with periodic surface charge distribution. This unique structure can be switched using strain gradient and provides a means to regulate cells and polar molecules in physiological and bioelectric applications.
Article
Physics, Multidisciplinary
Natascha Hedrich, Kai Wagner, Oleksandr V. Pylypovskyi, Brendan J. Shields, Tobias Kosub, Denis D. Sheka, Denys Makarov, Patrick Maletinsky
Summary: The study demonstrated manipulation and interaction of antiferromagnetic domain walls using isolated 180 degree domain walls in a single crystal of Cr2O3, proposing a memory architecture based on topographically defined antiferromagnetic domain walls. These results advance the understanding of domain wall mechanics in antiferromagnets.
Article
Materials Science, Ceramics
Xu Jiang, Jie Sun, Xiaojie Chai, Yifan Chen, Wei Zhang, Jun Jiang, Anquan Jiang
Summary: The study found that the wall current varies with the angle between the applied electric field and the initial polarization, and that the oxygen vacancy concentration can be controlled through thermal annealing, affecting the magnitude of the domain wall current.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Jacques Miltat, Andre Thiaville
Summary: Spin textures in perfectly ordered antiferromagnetic ultrathin films were evaluated using atomistic simulations and compared with the results of the (l, m) decomposition model. The study found that symmetric Heisenberg exchange interactions were sufficient to induce a natural canting between neighboring spins within a texture. However, the results of a pure lattice point dipole model contradicted the expectations of the (l, m) model.
Article
Materials Science, Multidisciplinary
Zhen Liu, Xiandong Zhou, Biao Feng, Bai-Xiang Xu
Summary: This study shows that large flexoelectricity in thin films can result in exotic in-plane superdomains, and the tip-induced flexoelectric field can tune the polarization nucleation during cooling. This research provides a new approach to create and manipulate desired superstructures, offering a framework for developing engineering techniques in conjunction with phase-field modeling.
Article
Physics, Applied
Fa Chen, Xu Ge, Wei Luo, Renhao Xing, Shiheng Liang, Xiaofei Yang, Long You, Rui Xiong, Yoshichika Otani, Yue Zhang
Summary: This study explores the method of triggering oscillation of AFM DW by applying stress in spatial coordinates, to further expand the characteristic frequency of AFM magnetization dynamics. The mismatch in size leads to low-frequency oscillation, allowing DW to move at an almost constant velocity.
PHYSICAL REVIEW APPLIED
(2021)
Article
Materials Science, Multidisciplinary
Xu Ge, Yangyi Chen, Zaidong Li, Peng Yan, Hong-Guang Piao, Wei Luo, Shiheng Liang, Xiaofei Yang, Long You, Yue Zhang
Summary: In this study, we numerically investigated THz magnon excitation from a moving antiferromagnetic domain wall driven by a voltage-induced magnetic anisotropy energy gradient. The resonant excitation of THz magnons was observed when the frequency of domain wall precession was higher than the frequency gap of spin-wave propagation in the medium. This work provides a potential approach for developing low-power THz spintronic devices.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Ekta Bhatia, Anand Srivastava, James Devine-Stoneman, Nadia A. Stelmashenko, Zoe H. Barber, Jason W. A. Robinson, Kartik Senapati
Summary: Researchers have successfully realized a nanoscale S/F/S planar junction by patterning a ferromagnetic material, showing long-range triplet supercurrents crossing a ferromagnetic barrier. They have also demonstrated a ferromagnetic planar nano-SQUID device consisting of two spin-triplet Josephson junctions.
Article
Physics, Applied
Xu Ge, Yangyi Chen, Yue Cao, Can Li, Tailin Li, Ziquan Li, Long You, Shiheng Liang, Xiaofei Yang, Yue Zhang
Summary: In this study, we numerically investigate the emission of spin wave packets from a moving antiferromagnetic domain wall and propose a method to generate a frequency comb with a sub-THz central frequency and a GHz frequency interval. Our work opens up possibilities for developing tunable frequency band AFM THz devices based on spin-orbit torque.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
Xiaodong He, Jijun Yun, Jianrong Zhang, Yongbo Zhai, Xi Guo, Xu Zhang, Baoshan Cui, Yang Ren, Yalu Zuo, Li Xi
Summary: The dynamics of domain wall (DW) motion in synthetic antiferromagnetic (SAF) structures were investigated, and it was found that the direction of DW motion can be reversed under specific conditions. In addition, the SAF structure can significantly enhance the DW velocity and suppress the tilting of DW's plane, which is valuable for spintronic racetrack memories.
PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS
(2023)
Article
Chemistry, Physical
Luyong Zhang, Guo Tian, Wenda Yang, Dongfeng Zheng, Chuanjie Lin, Jianbiao Xian, Yihang Guo, Xingchen Zhang, Xiuqin Qiu, Lanping Zhang, Zhen Fan, Deyang Chen, Zhipeng Hou, Minghui Qin, Jun-Ming Liu, Xingsen Gao
Summary: The precise patterning of nanoscopic domain structures in as-grown epitaxial PbTiO3 films can be achieved by introducing an ultrathin pre-patterned doping layer. This doping layer can effectively reverse the interfacial built-in bias, allowing for the transfer of the nano-patterns into the ferroelectric film's domain structure.
JOURNAL OF MATERIOMICS
(2023)
Article
Instruments & Instrumentation
Jonathan Logan, Ross Harder, Luxi Li, Daniel Haskel, Pice Chen, Robert Winarski, Peter Fuesz, Deborah Schlagel, David Vine, Christa Benson, Ian McNulty
JOURNAL OF SYNCHROTRON RADIATION
(2016)
Article
Materials Science, Multidisciplinary
Hyekyung Clarisse Kim, Jonathan Michael Logan, O. G. Shpyrko, P. B. Littlewood, E. D. Isaacs
Article
Physics, Applied
J. M. Logan, D. Rosenmann, T. Sangpo, M. V. Holt, P. Fuesz, I. McNulty
APPLIED PHYSICS LETTERS
(2017)
Article
Multidisciplinary Sciences
O. G. Shpyrko, E. D. Isaacs, J. M. Logan, Yejun Feng, G. Aeppli, R. Jaramillo, H. C. Kim, T. F. Rosenbaum, P. Zschack, M. Sprung, S. Narayanan, A. R. Sandy
Article
Multidisciplinary Sciences
ZC Wu, ZH Chen, X Du, JM Logan, J Sippel, M Nikolou, K Kamaras, JR Reynolds, DB Tanner, AF Hebard, AG Rinzler
