Magnetic Transition in Monolayer VSe2 via Interface Hybridization

Magnetism in monolayer (ML) VSe2 has attracted broad interest in spintronics while existing reports have not reached consensus. Using element-specific X-ray magnetic circular dichroism, a magnetic transition in ML VSe2 has been demonstrated at the contamination-free interface between Co and VSe2. Vi...

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Bibliographic Details
Published in:arXiv.org 2022-06
Main Authors: Zhang, Wen, Zhang, Lei, Ping Kwan Johnny Wong, Yuan, Jiaren, Vinai, Giovanni, Torelli, Piero, van der Laan, Gerrit, Feng, Yuan Ping, Shen Wee, Andrew Thye
Format: Article
Language:English
Subjects:
Antiferromagnetism
Dichroism
Ferromagnetism
Magnetic moments
Magnetic transitions
Monolayers
Spintronics
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Summary:Magnetism in monolayer (ML) VSe2 has attracted broad interest in spintronics while existing reports have not reached consensus. Using element-specific X-ray magnetic circular dichroism, a magnetic transition in ML VSe2 has been demonstrated at the contamination-free interface between Co and VSe2. Via interfacial hybridization with Co atomic overlayer, a magnetic moment of about 0.4 uB per V atom in ML VSe2 is revealed, approaching values predicted by previous theoretical calculations. Promotion of the ferromagnetism in ML VSe2 is accompanied by its antiferromagnetic coupling to Co and a reduction in the spin moment of Co. In comparison to the absence of this interface-induced ferromagnetism at the Fe/MLMoSe2 interface, these findings at the Co/ML-VSe2 interface provide clear proof that the ML VSe2, initially with magnetic disorder, is on the verge of magnetic transition.
ISSN:2331-8422
DOI:10.48550/arxiv.2206.02429