Park, Se Young Kim, Dong Seob Liu, Yu Hwang, Jinwoong Kim, Younghak Kim, Wondong Kim, Jae -Young Petrovic, Cedomir Hwang, Choongyu Mo, Sung-Kwan Kim, Hyung-jun Min, Byoung-Chul Koo, Hyun Cheol Chang, Joonyeon Jang, Chaun Choi, Jun Woo Ryu, Hyejin 2024-01-19T18:31:54Z 2024-01-19T18:31:54Z 2021-09-05 2020-01 1530-6984 https://pubs.kist.re.kr/handle/201004/119160 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.. English American Chemical Society Controlling the Magnetic Anisotropy of the van der Waals Ferromagnet Fe3GeTe2 through Hole Doping Article 10.1021/acs.nanolett.9b03316 1 Nano Letters, v.20, no.1, pp.95 - 100 Nano Letters 20 1 95 100 N scie scopus 000507151600013 2-s2.0-85076235212 Chemistry, Multidisciplinary Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Physics, Condensed Matter Chemistry Science & Technology - Other Topics Materials Science Physics Article ATOMIC LAYERS WAVE ENERGY van der Waals ferromagnets Fe3GeTe2 magnetic anisotropy electronic structures doping effects