{"title":"反铁磁体中电流驱动畴壁运动的多重沃克分解预测","authors":"Mu-Kun Lee, Rubén M. Otxoa, Masahito Mochizuki","doi":"10.1103/physrevb.110.l020408","DOIUrl":null,"url":null,"abstract":"We theoretically discover the possible emergence of reentrant Walker breakdowns for current-driven domain walls in layered antiferromagnets, in striking contrast to the unique Walker breakdown in ferromagnets. We reveal that the Lorentz contraction of domain wall width in antiferromagnets gives rise to nonlinear current dependence of the wall velocity and the predicted multiple Walker breakdowns. The dominant efficiency of the current-induced staggered spin-orbit torque over the spin-transfer torque to drive the domain wall motion is also demonstrated. These findings are expected to be observed in synthetic antiferromagnets experimentally and provide an important contribution to the growing research field of antiferromagnetic spintronics.","PeriodicalId":20082,"journal":{"name":"Physical Review B","volume":null,"pages":null},"PeriodicalIF":3.7000,"publicationDate":"2024-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Predicted multiple Walker breakdowns for current-driven domain wall motion in antiferromagnets\",\"authors\":\"Mu-Kun Lee, Rubén M. Otxoa, Masahito Mochizuki\",\"doi\":\"10.1103/physrevb.110.l020408\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"We theoretically discover the possible emergence of reentrant Walker breakdowns for current-driven domain walls in layered antiferromagnets, in striking contrast to the unique Walker breakdown in ferromagnets. We reveal that the Lorentz contraction of domain wall width in antiferromagnets gives rise to nonlinear current dependence of the wall velocity and the predicted multiple Walker breakdowns. The dominant efficiency of the current-induced staggered spin-orbit torque over the spin-transfer torque to drive the domain wall motion is also demonstrated. These findings are expected to be observed in synthetic antiferromagnets experimentally and provide an important contribution to the growing research field of antiferromagnetic spintronics.\",\"PeriodicalId\":20082,\"journal\":{\"name\":\"Physical Review B\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":3.7000,\"publicationDate\":\"2024-07-31\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Physical Review B\",\"FirstCategoryId\":\"101\",\"ListUrlMain\":\"https://doi.org/10.1103/physrevb.110.l020408\",\"RegionNum\":2,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"Physics and Astronomy\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Physical Review B","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1103/physrevb.110.l020408","RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"Physics and Astronomy","Score":null,"Total":0}
Predicted multiple Walker breakdowns for current-driven domain wall motion in antiferromagnets
We theoretically discover the possible emergence of reentrant Walker breakdowns for current-driven domain walls in layered antiferromagnets, in striking contrast to the unique Walker breakdown in ferromagnets. We reveal that the Lorentz contraction of domain wall width in antiferromagnets gives rise to nonlinear current dependence of the wall velocity and the predicted multiple Walker breakdowns. The dominant efficiency of the current-induced staggered spin-orbit torque over the spin-transfer torque to drive the domain wall motion is also demonstrated. These findings are expected to be observed in synthetic antiferromagnets experimentally and provide an important contribution to the growing research field of antiferromagnetic spintronics.
期刊介绍:
Physical Review B (PRB) is the world’s largest dedicated physics journal, publishing approximately 100 new, high-quality papers each week. The most highly cited journal in condensed matter physics, PRB provides outstanding depth and breadth of coverage, combined with unrivaled context and background for ongoing research by scientists worldwide.
PRB covers the full range of condensed matter, materials physics, and related subfields, including:
-Structure and phase transitions
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-Disordered systems and alloys
-Magnetism
-Superconductivity
-Electronic structure, photonics, and metamaterials
-Semiconductors and mesoscopic systems
-Surfaces, nanoscience, and two-dimensional materials
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