TY - JOUR
T1 - Emergence of electric-field-tunable interfacial ferromagnetism in 2D antiferromagnet heterostructures
AU - Cheng, Guanghui
AU - Rahman, Mohammad Mushfiqur
AU - He, Zhiping
AU - Allcca, Andres Llacsahuanga
AU - Rustagi, Avinash
AU - Stampe, Kirstine Aggerbeck
AU - Zhu, Yanglin
AU - Yan, Shaohua
AU - Tian, Shangjie
AU - Mao, Zhiqiang
AU - Lei, Hechang
AU - Watanabe, Kenji
AU - Taniguchi, Takashi
AU - Upadhyaya, Pramey
AU - Chen, Yong P.
N1 - Funding Information:
We thank Di Xiao, Wenguang Zhu for helpful discussions and Adam W. Tsen for help with crystals. The first-principles calculations have been done on the supercomputing system in the Supercomputing Center of the University of Science and Technology of China. We acknowledge partial support of the work from WPI-AIMR, Center for Science and Innovation in Spintronics, JSPS KAKENHI Basic Science A (18H03858), New Science (18H04473 and 20H04623), Tohoku University FRiDuo program, US Department of Defense (DOD) Multidisciplinary University Research Initiatives (MURI) program (FA9550-20-1-0322), US Department of Energy (DOE) Office of Science through the Quantum Science Center (QSC, a National Quantum Information Science Research Center), and Villum Foundation. For crystal synthesis: Z.M. acknowledges the support by the US DOE under grants DE-SC0019068. H.L. acknowledges the support by National Key R&D Program of China (2018YFE0202600, 2022YFA1403800), Beijing Natural Science Foundation (Z200005), and National Natural Science Foundation of China (12274459). K.W. and T.T. acknowledge support from the Elemental Strategy Initiative conducted by the MEXT, Japan (JPMXP0112101001) and JSPS KAKENHI (19H05790, 20H00354 and 21H05233).
Funding Information:
We thank Di Xiao, Wenguang Zhu for helpful discussions and Adam W. Tsen for help with crystals. The first-principles calculations have been done on the supercomputing system in the Supercomputing Center of the University of Science and Technology of China. We acknowledge partial support of the work from WPI-AIMR, Center for Science and Innovation in Spintronics, JSPS KAKENHI Basic Science A (18H03858), New Science (18H04473 and 20H04623), Tohoku University FRiDuo program, US Department of Defense (DOD) Multidisciplinary University Research Initiatives (MURI) program (FA9550-20-1-0322), US Department of Energy (DOE) Office of Science through the Quantum Science Center (QSC, a National Quantum Information Science Research Center), and Villum Foundation. For crystal synthesis: Z.M. acknowledges the support by the US DOE under grants DE-SC0019068. H.L. acknowledges the support by National Key R&D Program of China (2018YFE0202600, 2022YFA1403800), Beijing Natural Science Foundation (Z200005), and National Natural Science Foundation of China (12274459). K.W. and T.T. acknowledge support from the Elemental Strategy Initiative conducted by the MEXT, Japan (JPMXP0112101001) and JSPS KAKENHI (19H05790, 20H00354 and 21H05233).
Publisher Copyright:
© 2022, The Author(s).
PY - 2022/12
Y1 - 2022/12
N2 - Van der Waals (vdW) magnet heterostructures have emerged as new platforms to explore exotic magnetic orders and quantum phenomena. Here, we study heterostructures of layered antiferromagnets, CrI3 and CrCl3, with perpendicular and in-plane magnetic anisotropy, respectively. Using magneto-optical Kerr effect microscopy, we demonstrate out-of-plane magnetic order in the CrCl3 layer proximal to CrI3, with ferromagnetic interfacial coupling between the two. Such an interlayer exchange field leads to higher critical temperature than that of either CrI3 or CrCl3 alone. We further demonstrate significant electric-field control of the coercivity, attributed to the naturally broken structural inversion symmetry of the heterostructure allowing unprecedented direct coupling between electric field and interfacial magnetism. These findings illustrate the opportunity to explore exotic magnetic phases and engineer spintronic devices in vdW heterostructures.
AB - Van der Waals (vdW) magnet heterostructures have emerged as new platforms to explore exotic magnetic orders and quantum phenomena. Here, we study heterostructures of layered antiferromagnets, CrI3 and CrCl3, with perpendicular and in-plane magnetic anisotropy, respectively. Using magneto-optical Kerr effect microscopy, we demonstrate out-of-plane magnetic order in the CrCl3 layer proximal to CrI3, with ferromagnetic interfacial coupling between the two. Such an interlayer exchange field leads to higher critical temperature than that of either CrI3 or CrCl3 alone. We further demonstrate significant electric-field control of the coercivity, attributed to the naturally broken structural inversion symmetry of the heterostructure allowing unprecedented direct coupling between electric field and interfacial magnetism. These findings illustrate the opportunity to explore exotic magnetic phases and engineer spintronic devices in vdW heterostructures.
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U2 - 10.1038/s41467-022-34812-6
DO - 10.1038/s41467-022-34812-6
M3 - Article
C2 - 36522317
AN - SCOPUS:85144137160
SN - 2041-1723
VL - 13
JO - Nature Communications
JF - Nature Communications
IS - 1
M1 - 7348
ER -