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Controlling the Magnetic Anisotropy of the van der Waals Ferromagnet Fe3GeTe2 through Hole Doping
- Source :
- Nano Letters. 20:95-100
- Publication Year :
- 2019
- Publisher :
- American Chemical Society (ACS), 2019.
-
Abstract
- Identifying material parameters affecting properties of ferromagnets is key to optimized materials that are better suited for spintronics. Magnetic anisotropy is of particular importance in van der Waals magnets, since it not only influences magnetic and spin transport properties, but also is essential to stabilizing magnetic order in the two-dimensional limit. Here, we report that hole doping effectively modulates the magnetic anisotropy of a van der Waals ferromagnet and explore the physical origin of this effect. Fe3-xGeTe2 nanoflakes show a significant suppression of the magnetic anisotropy with hole doping. Electronic structure measurements and calculations reveal that the chemical potential shift associated with hole doping is responsible for the reduced magnetic anisotropy by decreasing the energy gain from the spin-orbit induced band splitting. Our findings provide an understanding of the intricate connection between electronic structures and magnetic properties in two-dimensional magnets and propose a method to engineer magnetic properties through doping.
- Subjects :
- Materials science
Spintronics
Condensed matter physics
Mechanical Engineering
Doping
Bioengineering
02 engineering and technology
General Chemistry
Electronic structure
021001 nanoscience & nanotechnology
Condensed Matter Physics
Magnetic anisotropy
symbols.namesake
Ferromagnetism
Magnet
symbols
Condensed Matter::Strongly Correlated Electrons
General Materials Science
van der Waals force
0210 nano-technology
Spin (physics)
Subjects
Details
- ISSN :
- 15306992 and 15306984
- Volume :
- 20
- Database :
- OpenAIRE
- Journal :
- Nano Letters
- Accession number :
- edsair.doi...........28e67dc177327b7ecbad625b4a79212d