@article{f0c69444ee8f41aa8801f2324cf5e00f,
title = "Controlling the Magnetic Anisotropy of the van der Waals Ferromagnet Fe3GeTe2 through Hole Doping",
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.",
keywords = "FeGeTe, doping effects, electronic structures, magnetic anisotropy, van der Waals ferromagnets",
author = "Park, {Se Young} and Kim, {Dong Seob} and Yu Liu and Jinwoong Hwang and Younghak Kim and Wondong Kim and Kim, {Jae Young} and Cedomir Petrovic and Choongyu Hwang and Mo, {Sung Kwan} and Kim, {Hyung Jun} and Min, {Byoung Chul} and Koo, {Hyun Cheol} and Joonyeon Chang and Chaun Jang and Choi, {Jun Woo} and Hyejin Ryu",
note = "Funding Information: This work was mainly supported by the KIST Institutional Program (2E29410), the Institute for Basic Science in Korea (Grant No. IBS-R009-D1), and the National Research Council of Science and Technology (NST) grant by MSIP (Grant No. CAP-16-01-KIST). This paper was also supported by the U.S. DOE-BES, Division of Materials Science and Engineering, under Contract No. DESC0012704 (BNL). J.W.C. and H.R. acknowledge the travel fund supported by the National Research Foundation of Korea (NRF) funded by the Korea government (MSIT; 2019K1A3A7A09033388). The ARPES performed at the ALS was supported by the Office of Basic Energy Sciences, U.S. DOE, under Contract No. DE-AC02-05CH11231. C.H. also acknowledges support from the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT; Nos. 2017K1A3A7A09016384 and 2018R1A2B6004538). Funding Information: This work was mainly supported by the KIST Institutional Program (2E29410), the Institute for Basic Science in Korea (Grant No. IBS-R009-D1), and the National Research Council of Science and Technology (NST) grant by MSIP (Grant No. CAP-16-01-KIST). This paper was also supported by the U.S. DOE-BES, Division of Materials Science and Engineering, under Contract No. DESC0012704 (BNL). J.W.C. and H.R. acknowledge the travel fund supported by the National Research Foundation of Korea (NRF) funded by the Korea government (MSIT; 2019K1A3A7A09033388). The ARPES performed at the ALS was supported by the Office of Basic Energy Sciences, U.S. DOE, under Contract No. DE-AC02-05CH11231. C.H. also acknowledges support from the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT; Nos. 2017K1A3A7A09016384 and 2018R1A2B6004538). Publisher Copyright: Copyright {\textcopyright} 2019 American Chemical Society.",
year = "2020",
month = jan,
day = "8",
doi = "10.1021/acs.nanolett.9b03316",
language = "English",
volume = "20",
pages = "95--100",
journal = "Nano Letters",
issn = "1530-6984",
publisher = "American Chemical Society",
number = "1",
}