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.
@article{arxiv.2206.02429,
title = {Magnetic Transition in Monolayer VSe2 via Interface Hybridization},
author = {Wen Zhang and Lei Zhang and Ping Kwan Johnny Wong and Jiaren Yuan and Giovanni Vinai and Piero Torelli and Gerrit van der Laan and Yuan Ping Feng and Andrew Thye Shen Wee},
journal= {arXiv preprint arXiv:2206.02429},
year = {2022}
}