期刊
PHYSICAL REVIEW MATERIALS
卷 4, 期 9, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevMaterials.4.094403
关键词
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资金
- Office of Science of the U.S. Department of Energy [DE-AC05-00OR22725]
- Office of Science of the U.S. DOE [DE-AC02-05CH11231]
- U.S. Department of Energy, Office of Science, Basic Sciences, Materials Sciences and Engineering Division
- U.S. DOE [DE-G FG02-13ER41967]
- U.S. Department of Energy [DE-AC05-00OR22725]
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.
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