Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.



Origin of ferromagnetism in Fe3GeTe2 and its manipulation

Abstract

Recent experimental findings of two dimensional ferromagnetism in Fe3GeTe2, whose critical temperature can reach room temperature by gating, has attracted great research interests. Here we performed the elaborate ab-initio studies by using density functional theory, dynamical mean-field theory and magnetic force response theory. Contrary to the conventional wisdom, it is unambiguously shown that Fe3GeTe2 is not ferromagnetic but antiferromagnetic carrying zero net moment in its stoichiometric phase. Fe defect and hole doping are the keys to make this material ferromagnetic as supported by unnoticed previous experiments. Further, we found that the electron doping also induces the antiferro- to ferromagnetic transition. It is a crucial factor to understand the notable recent experiment of gate-controlled ferromagnetism. Our results not only unveil the origin of ferromagnetism of this material but also show how it can be manipulated with defect and doping.

Back to tab navigation

Supplementary files

Article information


Submitted
01 Dec 2019
Accepted
18 May 2020
First published
21 May 2020

Nanoscale, 2020, Accepted Manuscript
Article type
Paper

Origin of ferromagnetism in Fe3GeTe2 and its manipulation

S. W. Jang, H. Yoon, M. Y. Jeong, S. Ryee, H. Kim and M. J. Han, Nanoscale, 2020, Accepted Manuscript , DOI: 10.1039/C9NR10171C

Social activity

Search articles by author

Spotlight

Advertisements