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

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 ma...

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Vydáno v:Nature communications Ročník 11; číslo 1; s. 3860 - 6
Hlavní autoři: Wu, Yingying, Zhang, Senfu, Zhang, Junwei, Wang, Wei, Zhu, Yang Lin, Hu, Jin, Yin, Gen, Wong, Kin, Fang, Chi, Wan, Caihua, Han, Xiufeng, Shao, Qiming, Taniguchi, Takashi, Watanabe, Kenji, Zang, Jiadong, Mao, Zhiqiang, Zhang, Xixiang, Wang, Kang L.
Médium: Journal Article
Jazyk:angličtina
Vydáno: London Nature Publishing Group UK 31.07.2020
Nature Publishing Group
Nature Portfolio
Témata:
639/301/1005/1007
639/766/1130/2798
639/766/119/1001
Coupling
Electromagnetism
Electronic and spintronic devices
Electronic devices
Energy
ENGINEERING
Flux density
Hall effect
Heterostructures
Humanities and Social Sciences
Hypothetical particles
Image transmission
Information storage
Magnetic domains
multidisciplinary
Particle theory
Phase transitions
Physics
Science
Science (multidisciplinary)
Spintronics
Thin films
Transmission electron microscopy
ISSN:2041-1723, 2041-1723
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Shrnutí: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 Néel-type skyrmions are induced at the WTe 2 /Fe 3 GeTe 2 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 Néel-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 mJ m −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 WTe 2 /Fe 3 GeTe 2 van der Waals heterostructure and a Dzyaloshinskii–Moriya interaction with a large energy density of 1.0 mJm −2 .
Bibliografie:ObjectType-Article-1
SourceType-Scholarly Journals-1
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SC0020221; SC0019068; W911NF-15-1-10561; 1935362; 1909416; SC0012670; OSR-2016-CRG5-2977
National Science Foundation (NSF)
USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division
US Army Research Office (ARO)
ISSN:2041-1723
2041-1723
DOI:10.1038/s41467-020-17566-x