Anomalous magnetotransport in Van der Waals ferromagnet Fe<sub>2</sub>GeTe<sub>3</sub>
ORAL
Abstract
Ferromagnetic Van der Waals (VdW) materials have recently emerged as a new member of two dimensional (2d) material family. In addition to potential application in spintronics industry, layered ferromagnets often exhibit exotic physical properties in stark contrast with traditional magnetic thin films. This family of materials retain their structural stability even down to monolayer limit. Through mechanical exfoliation, samples with different geometries are readily available, which may manifest drastically different behaviours. In this work, we report the anomalous magnetotransport in exfoliated Fe2GeTe3 nano flakes with a thickness step. The observed antisymmetric magnetoresistance and stepped anomalous Hall resistance indicate a circulation of electric current around the step with two magnetic domains at each side. Furthermore, the direction of the circulation is shown to have a dependence on the relative coercive field of two sides. Our work may pave the way for future magnetic information encoding with domain wall manipulation in ultrathin 2d materials.
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Presenters
Siqi Wang
University of California at Berkeley
University of California, Berkeley
Authors
Siqi Wang
University of California at Berkeley
University of California, Berkeley
Yang Xia
University of California at Berkeley
Takashi Taniguchi
National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305 0044, Japan
National Institute for Materials Science
Advanced Materials Laboratory, National Institute for Materials Science, , 1-1 Namiki, Tsukuba 305-0044, Japan
National Institute for Material Science, 1-1 Namiki, Tsukuba 305-0044
National Institute of Materials Science
NIMS, Japan
Advanced Materials Laboratory, NIMS
National Institute for Materials Science, Tsukuba, Japan
Advanced Materials Laboratory, National Institute for Materials Science
National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan
National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0044, Japan
National Institute for Materials Science (NIMS)
NIMS Tsukuba
NIMS
National Institute for Material Science
National Institute for Materials Science, Japan
National Institute for Materials Science, 1-1 Namiki, Tsukuba, Japan
National Institute for Materials Science , Japan
Advanced Materials Laboratory, National Institute for Materials Science, Japan
Advanced Materials Laboratory, National Institute for Materials Science, Tsukuba, Ibaraki 305-0044, Japan
National Institute for Materials Science, Tsukuba, Ibaraki 305- 0044, Japan
National Institute for Material Science - Japan
National Institute for Materials Science, Namiki Tsukuba Ibaraki, Japan
National Institute of Material Science
Advanced Material Lab, NIMS
Advanced Materials Laboratory, National Institute for Materials Science, Tsukuba, Japan
Advanced Materials Laboratory, National Institute for Materials Science, Tsukuba, Ibaraki, Japan
National Institute for Materials Science, Tsukuba
1-1 Namiki, Tsukuba, National Institute for Materials Science
NIMS/Tsukuba
National Institute for Materials Science, 1-1 Namiki, Tsukuba, 305-0044 Japan
National Institute for Materials Science, Namiki, 305-0044, Japan
National Institute for Material Science, Japan
Advanced Materials Laboratory, NIMS, Japan
Advanced Materials Labaratory, National Institute for Materials Science
National Institute of Material Science, 1-1 Namiki, Tsukuba, Ibaraki 205-0044, Japan
National Institute of Materials Science, Japan
Kenji Watanabe
National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305 0044, Japan
Advanced Materials Laboratory, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan
National Institute for Materials Science
Advanced Materials Laboratory, National Institute for Materials Science, , 1-1 Namiki, Tsukuba 305-0044, Japan
National Institute for Material Science, 1-1 Namiki, Tsukuba 305-0044
National Institute of Materials Science
NIMS, Japan
Advanced Materials Laboratory, NIMS
National Institute for Materials Science, Tsukuba, Japan
National Institute for Materials Science, Japan
Advanced Materials Laboratory, National Institute for Materials Science
National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan
National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0044, Japan
National Institute for Materials Science (NIMS)
NIMS Tsukuba
National Institute for Materials Science (Japan)
NIMS
National Institute for Material Science
National Institute for Materials Science, 1-1 Namiki, Tsukuba, Japan
National Institute for Materials Science , Japan
National Institute for Materials Science, Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan.
Advanced Materials Laboratory, National Institute for Materials Science, Japan
Advanced Materials Laboratory, National Institute for Materials Science, Tsukuba, Ibaraki 305-0044, Japan
National Institute for Materials Science, Tsukuba, Ibaraki 305- 0044, Japan
National Institute for Material Science - Japan
National Institute for Materials Science, Namiki Tsukuba Ibaraki, Japan
National Institute of Material Science
Advanced Material Lab, NIMS
Advanced Materials Laboratory, National Institute for Materials Science, Tsukuba, Japan
Advanced Materials Laboratory, National Institute for Materials Science, Tsukuba, Ibaraki, Japan
National Institute for Materials Science, Tsukuba
1-1 Namiki, Tsukuba, National Institute for Materials Science
NIMS/Tsukuba
National Institute for Materials Science, 1-1 Namiki, Tsukuba, 305-0044 Japan
National Institute for Materials Science, Namiki, 305-0044, Japan
National Institute for Material Science, Japan
Advanced Materials Laboratory, NIMS, Japan
Columbia University
Advanced Materials Labaratory, National Institute for Materials Science
National Institute of Material Science, 1-1 Namiki, Tsukuba, Ibaraki 205-0044, Japan
