Thickness- and Field-Dependent Magnetic Domain Evolution in van der Waals Fe3GaTe2

被引：12

作者：

Jin, Shuaizhao ^{[1
]}

Wang, Yiting ^{[2
,3
]}

Zheng, Haotian ^{[4
]}

Dong, Shouzhe ^{[5
,6
]}

Han, Kun ^{[2
,3
]}

Wang, Zhan ^{[7
]}

Wang, Guangcheng ^{[8
]}

Jiang, Xingang ^{[1
]}

Wang, Xiaolei ^{[8
]}

Hong, Jiawang ^{[1
]}

Huang, Houbing ^{[5
,6
]}

Zhang, Ying ^{[7
]}

Xia, Tian-Long ^{[2
,3
]}

Wang, Xueyun ^{[1
]}

机构：

[1] Beijing Inst Technol, Sch Aerosp Engn, Beijing 100081, Peoples R China

[2] Renmin Univ China, Beijing Key Lab Optoelect Funct Mat & Micronano De, Dept Phys, Beijing 100872, Peoples R China

[3] Renmin Univ China, Key Lab Quantum State Construct & Manipulat, Minist Educ, Beijing 100872, Peoples R China

[4] Beijing Inst Technol, Sch Automat, Beijing 100081, Peoples R China

[5] Beijing Inst Technol, Adv Res Inst Multidisciplinary Sci, Beijing 100081, Peoples R China

[6] Beijing Inst Technol, Sch Mat Sci & Engn, Beijing 100081, Peoples R China

[7] Chinese Acad Sci, Inst Phys, Beijing Natl State Key Lab Magnetism, Beijing 100190, Peoples R China

[8] Beijing Univ Technol, Sch Phys & Optoelect Engn, Beijing 100124, Peoples R China

来源：

NANO LETTERS | 2024年 / 24卷 / 18期

基金：

中国国家自然科学基金; 北京市自然科学基金;

关键词：

magnetic domain; van der Waals magnet; Fe3GaTe2; magnetic force microscope; NEEL-TYPE SKYRMIONS; FERROMAGNETISM; LATTICE;

D O I：

10.1021/acs.nanolett.4c00496

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The discovery of room-temperature ferromagnetism in van der Waals (vdW) materials opens new avenues for exploring low-dimensional magnetism and its applications in spintronics. Recently, the observation of the room-temperature topological Hall effect in the vdW ferromagnet Fe3GaTe2 suggests the possible existence of room-temperature skyrmions, yet skyrmions have not been directly observed. In this study, real-space imaging was employed to investigate the domain evolution of the labyrinth and skyrmion structure. First, Neel-type skyrmions can be created at room temperature. In addition, the influence of flake thickness and external magnetic field (during field cooling) on both labyrinth domains and the skyrmion lattice is unveiled. Due to the competition between magnetic anisotropy and dipole interactions, the specimen thickness significantly influences the density of skyrmions. These findings demonstrate that Fe3GaTe2 can host room-temperature skyrmions of various sizes, opening up avenues for further study of magnetic topological textures at room temperature.

引用

页码：5467 / 5473

页数：7

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