覆盖层
自旋电子学
单层
磁性
凝聚态物理
铁磁性
磁矩
反铁磁性
磁圆二色性
过渡金属
材料科学
感应耦合
结晶学
化学
纳米技术
物理
催化作用
谱线
天文
量子力学
生物化学
作者
Wen Zhang,Lei Zhang,Ping Kwan Johnny Wong,Jiaren Yuan,Giovanni Vinai,Piero Torelli,G. van der Laan,Yuan Ping Feng,Andrew Thye Shen Wee
出处
期刊:ACS Nano
[American Chemical Society]
日期:2019-07-15
卷期号:13 (8): 8997-9004
被引量:86
标识
DOI:10.1021/acsnano.9b02996
摘要
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.
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