Kim, Kwangsu Ahn, Hyo-Bin Lee, Seungho Jeong, Seyeop Lee, Donghyeon Lee, Siha Im, Subin Kim, Seong Been Kim, Sung Jong Park, Jungmin Lee, Nyun Jong Koo, Hyun Cheol An, Kyongmo Moon, Kyoung-Woong Kim, Bongjae Kim, Kyoo Kim, Kab-Jin Lee, Changgu Kim, Kyoung-Whan Kim, Se Kwon Park, Tae-Eon Kim, Sanghoon 2025-03-22T15:30:22Z 2025-03-22T15:30:22Z 2025-03-19 2025-03 0935-9648 https://pubs.kist.re.kr/handle/201004/152045 Efficient magnetization control is a central issue in magnetism and spintronics. Particularly, there are increasing demands for manipulation of magnetic states in van der Waals (vdW) magnets with unconventional functionalities. However, the electrically induced phase transition between ferromagnetic-to-antiferromagnetic states without external magnetic field is yet to be demonstrated. Here, the current-induced magnetic phase transition in a vdW ferromagnet Fe5GeTe2 is reported. Based on magneto-transport measurements and theoretical analysis, it is demonstrated that transition in the interlayer magnetic coupling occurs through vertical voltage drop between layers induced by current which is attributed to high anisotropy of the resistivity caused by the vdW gaps. Such magnetic phase transition results in giant modulation of the longitudinal magnetoresistance from 5% to 170%. The electrical tunability of the magnetic phase in Fe5GeTe2 with current-in-plane geometry opens a path for electric control of magnetic properties, expanding the ability to use vdW magnets for spintronic applications. English WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim Giant Modulation of Magnetoresistance in a Van Der Waals Magnet by In-Plane Current Injection Article 10.1002/adma.202414917 1 Advanced Materials, v.37, no.10 Advanced Materials 37 10 Y scie scopus 001406832200001 2-s2.0-85216339959 Chemistry, Multidisciplinary Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Physics, Condensed Matter Chemistry Science & Technology - Other Topics Materials Science Physics Article STATES 2D magnet anisotropic resistivity antiferromagnet transition electrical modulation magnetoresistance spintronics van der waals gap