Epitaxially grown monolayer VSe2: an air-stable magnetic two-dimensional material with low work function at edges

• 来源期刊: 科学通报（英文版）
• 年，卷（期）: 2018,（7）
• 页码范围: 419-425
• 页数: 7页
• 语种: 英文

摘要

Recent experimental breakthroughs open up new opportunities for magnetism in few-atomic-layer two-dimensional (2D) materials,which makes fabrication of new magnetic 2D materials a fascinating issue.Here,we report the growth of monolayer VSe2 by molecular beam epitaxy (MBE) method.Electronic properties measurements by scanning tunneling spectroscopy (STS) method revealed that the asgrown monolayer VSe2 has magnetic characteristic peaks in its electronic density of states and a lower work-function at its edges.Moreover,air exposure experiments show air-stability of the monolayer VSe2.This high-quality monolayer VSe2,a very air-inert 2D material with magnetism and low edge work function,is promising for applications in developing next-generation low power-consumption,high efficiency spintronic devices and new electrocatalysts.