Controlling the Magnetic Anisotropy of the van der Waals Ferromagnet Fe3GeTe2 through Hole Doping | Zendy

Se Young Park | Zendy; Dong Seob Kim | Zendy; Yu Liu | Zendy; Jinwoong Hwang | Zendy; Younghak Kim | Zendy; Wondong Kim | Zendy; JaeYoung Kim | Zendy; C. Petrović | Zendy; Choongyu Hwang | Zendy; SungKwan Mo | Zendy; Hyung-jun Kim | Zendy; ByoungChul Min | Zendy; Hyun Cheol Koo | Zendy; Joonyeon Chang | Zendy; Chaun Jang | Zendy; Jun Woo Choi | Zendy; Hyejin Ryu | Zendy

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Controlling the Magnetic Anisotropy of the van der Waals Ferromagnet Fe₃GeTe₂ through Hole Doping

Author(s) -

Se Young Park,

Dong Seob Kim,

Yu Liu,

Jinwoong Hwang,

Younghak Kim,

Wondong Kim,

JaeYoung Kim,

C. Petrović,

Choongyu Hwang,

SungKwan Mo,

Hyung-jun Kim,

ByoungChul Min,

Hyun Cheol Koo,

Joonyeon Chang,

Chaun Jang,

Jun Woo Choi,

Hyejin Ryu

Publication year - 2019

Publication title -

nano letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 4.853

H-Index - 488

eISSN - 1530-6992

pISSN - 1530-6984

DOI - 10.1021/acs.nanolett.9b03316

Subject(s) - condensed matter physics , van der waals force , spintronics , ferromagnetism , magnetic anisotropy , doping , anisotropy , materials science , magnet , magnetization , magnetic field , physics , quantum mechanics , molecule

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. Fe 3- x GeTe 2 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.

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