Interlayer magnetism in Fe3-xGeTe2

被引：18

作者：

Kong, Xiangru ^{[1
]}

Nguyen, Giang D. ^{[1
]}

Lee, Jinhwan ^{[2
,3
]}

Lee, Changgu ^{[3
,4
]}

Calder, Stuart ^{[5
]}

May, Andrew F. ^{[6
]}

Gai, Zheng ^{[1
]}

Li, An-Ping ^{[1
]}

Liang, Liangbo ^{[1
]}

Berlijn, Tom ^{[1
,7
]}

机构：

[1] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA

[2] Univ British Columbia, Stewart Blusson Quantum Matter Inst, Vancouver, BC V6T 1Z4, Canada

[3] Sungkyunkwan Univ, Sch Mech Engn, Suwon 16419, Kyonggi Do, South Korea

[4] Sungkyunkwan Univ, SKKU Adv Inst Nanotechnol, Suwon 16419, Kyonggi Do, South Korea

[5] Oak Ridge Natl Lab, Neutron Scattering Div, Oak Ridge, TN 37831 USA

[6] Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA

[7] Oak Ridge Natl Lab, Computat Sci & Engn Div, Oak Ridge, TN 37831 USA

来源：

PHYSICAL REVIEW MATERIALS | 2020年 / 4卷 / 09期

关键词：

Iron compounds - Density functional theory - Electronic properties - Magnetic materials - Magnetism - Van der Waals forces - Neutron diffraction - Tellurium compounds;

D O I：

10.1103/PhysRevMaterials.4.094403

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Fe3-xGeTe2 is a layered van der Waals magnetic material with a relatively high ordering temperature and large anisotropy. While most studies have concluded the interlayer ordering to be ferromagnetic, there have also been reports of interlayer antiferromagnetism in Fe3-xGeTe2. Here, we investigate the interlayer magnetic ordering by neutron diffraction experiments, scanning tunneling microscopy (STM) and spin-polarized STM measurements, density functional theory plus U calculations, and STM simulations. We conclude that the layers of Fe3-xGeTe2 are coupled ferromagnetically and that in order to capture the magnetic and electronic properties of Fe3-xGeTe2 within density functional theory, Hubbard U corrections need to be taken into account.

引用

页数：6