Neel-type skyrmion in WTe2/Fe3GeTe2 van der Waals heterostructure

被引：293

作者：

Wu, Yingying ^{[1
]}

Zhang, Senfu ^{[2
]}

Zhang, Junwei ^{[2
]}

Wang, Wei ^{[3
,4
]}

Zhu, Yang Lin ^{[5
]}

Hu, Jin ^{[6
]}

Yin, Gen ^{[1
]}

Wong, Kin ^{[1
]}

Fang, Chi ^{[7
]}

Wan, Caihua ^{[7
]}

Han, Xiufeng ^{[7
]}

Shao, Qiming ^{[1
]}

Taniguchi, Takashi ^{[8
]}

Watanabe, Kenji ^{[8
]}

Zang, Jiadong ^{[9
]}

Mao, Zhiqiang ^{[5
]}

Zhang, Xixiang ^{[2
]}

Wang, Kang L. ^{[1
]}

机构：

[1] Univ Calif Los Angeles, Dept Elect & Comp Engn, Los Angeles, CA 90095 USA

[2] King Abdullah Univ Sci & Technol, Phys Sci & Engn Div, Thuwal 239556900, Saudi Arabia

[3] Nanjing Tech Univ, Key Lab Flexible Elect, Nanjing 211816, Peoples R China

[4] Nanjing Tech Univ, Inst Adv Mat, Jiangsu Natl Synerget Innovat Ctr Adv Mat, Nanjing 211816, Peoples R China

[5] Penn State Univ, Dept Phys, University Pk, PA 16802 USA

[6] Univ Arkansas, Dept Phys, Fayetteville, AR 72701 USA

[7] Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China

[8] Natl Inst Mat Sci, 1-1 Namiki, Tsukuba, Ibaraki 3050044, Japan

[9] Univ New Hampshire, Dept Phys & Astron, Durham, NH 03824 USA

来源：

NATURE COMMUNICATIONS | 2020年 / 11卷 / 01期

基金：

美国国家科学基金会;

关键词：

FERROMAGNETISM; DYNAMICS;

D O I：

10.1038/s41467-020-17566-x

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The promise of high-density and low-energy-consumption devices motivates the search for layered structures that stabilize chiral spin textures such as topologically protected skyrmions. At the same time, recently discovered long-range intrinsic magnetic orders in the two-dimensional van der Waals materials provide a new platform for the discovery of novel physics and effects. Here we demonstrate the Dzyaloshinskii-Moriya interaction and Neel-type skyrmions are induced at the WTe2/Fe3GeTe2 interface. Transport measurements show the topological Hall effect in this heterostructure for temperatures below 100 K. Furthermore, Lorentz transmission electron microscopy is used to directly image Neel-type skyrmion lattice and the stripe-like magnetic domain structures as well. The interfacial coupling induced Dzyaloshinskii-Moriya interaction is estimated to have a large energy of 1.0 mJm(-2). This work paves a path towards the skyrmionic devices based on van der Waals layered heterostructures. Strong magnetic interfacial coupling in van der Waals heterostructures provides a new platform for discovering novel physics and effects. Here, the authors report the formation of skyrmion lattice in the WTe2/Fe3GeTe2 van der Waals heterostructure and a Dzyaloshinskii-Moriya interaction with a large energy density of 1.0 mJm(-2).

引用

页数：6

共 37 条

[1] Spin-orbit proximity effect in graphene [J].

Avsar, A. ;

Tan, J. Y. ;

Taychatanapat, T. ;

Balakrishnan, J. ;

Koon, G. K. W. ;

Yeo, Y. ;

Lahiri, J. ;

Carvalho, A. ;

Rodin, A. S. ;

O'Farrell, E. C. T. ;

Eda, G. ;

Castro Neto, A. H. ;

Oezyilmaz, B. .

NATURE COMMUNICATIONS, 2014, 5

[2] CRYSTALLOGRAPHIC, MAGNETIC AND ELECTRONIC-STRUCTURES OF A NEW LAYERED FERROMAGNETIC COMPOUND CR2GE2TE6 [J].

CARTEAUX, V ;

BRUNET, D ;

OUVRARD, G ;

ANDRE, G .

JOURNAL OF PHYSICS-CONDENSED MATTER, 1995, 7 (01) :69-87

[3] Gate-tunable room-temperature ferromagnetism in two-dimensional Fe3GeTe2 [J].

Deng, Yujun ;

Yu, Yijun ;

Song, Yichen ;

Zhang, Jingzhao ;

Wang, Nai Zhou ;

Sun, Zeyuan ;

Yi, Yangfan ;

Wu, Yi Zheng ;

Wu, Shiwei ;

Zhu, Junyi ;

Wang, Jing ;

Chen, Xian Hui ;

Zhang, Yuanbo .

NATURE, 2018, 563 (7729) :94-+

[4] Two-dimensional itinerant ferromagnetism in atomically thin Fe3GeTe2 [J].

Fei, Zaiyao ;

Huang, Bevin ;

Malinowski, Paul ;

Wang, Wenbo ;

Song, Tiancheng ;

Sanchez, Joshua ;

Yao, Wang ;

Xiao, Di ;

Zhu, Xiaoyang ;

May, Andrew F. ;

Wu, Weida ;

Cobden, David H. ;

Chu, Jiun-Haw ;

Xu, Xiaodong .

NATURE MATERIALS, 2018, 17 (09) :778-+

[5] Discovery of intrinsic ferromagnetism in two-dimensional van der Waals crystals [J].

Gong, Cheng ;

Li, Lin ;

Li, Zhenglu ;

Ji, Huiwen ;

Stern, Alex ;

Xia, Yang ;

Cao, Ting ;

Bao, Wei ;

Wang, Chenzhe ;

Wang, Yuan ;

Qiu, Z. Q. ;

Cava, R. J. ;

Louie, Steven G. ;

Xia, Jing ;

Zhang, Xiang .

NATURE, 2017, 546 (7657) :265-+

[6] Layer-dependent ferromagnetism in a van der Waals crystal down to the monolayer limit [J].

Huang, Bevin ;

Clark, Genevieve ;

Navarro-Moratalla, Efren ;

Klein, Dahlia R. ;

Cheng, Ran ;

Seyler, Kyle L. ;

Zhong, Ding ;

Schmidgall, Emma ;

McGuire, Michael A. ;

Cobden, David H. ;

Yao, Wang ;

Xiao, Di ;

Jarillo-Herrero, Pablo ;

Xu, Xiaodong .

NATURE, 2017, 546 (7657) :270-+

[7] Microscopic understanding of magnetic interactions in bilayer CrI3 [J].

Jang, Seung Woo ;

Jeong, Min Yong ;

Yoon, Hongkee ;

Ryee, Siheon ;

Han, Myung Joon .

PHYSICAL REVIEW MATERIALS, 2019, 3 (03)

[8] Controlling magnetism in 2D CrI3 by electrostatic doping [J].

Jiang, Shengwei ;

Li, Lizhong ;

Wang, Zefang ;

Mak, Kin Fai ;

Shan, Jie .

NATURE NANOTECHNOLOGY, 2018, 13 (07) :549-+

[9] Skyrmions in magnetic multilayers [J].

Jiang, Wanjun ;

Chen, Gong ;

Liu, Kai ;

Zang, Jiadong ;

te Velthuis, Suzanne G. E. ;

Hoffmann, Axel .

PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 2017, 704 :1-49

[10] Blowing magnetic skyrmion bubbles [J].

Jiang, Wanjun ;

Upadhyaya, Pramey ;

Zhang, Wei ;

Yu, Guoqiang ;

Jungfleisch, M. Benjamin ;

Fradin, Frank Y. ;

Pearson, John E. ;

Tserkovnyak, Yaroslav ;

Wang, Kang L. ;

Heinonen, Olle ;

te Velthuis, Suzanne G. E. ;

Hoffmann, Axel .

SCIENCE, 2015, 349 (6245) :283-286

← 1 2 3 4 →