Néel-type skyrmions and their current-induced motion in van der Waals ferromagnet-based heterostructures
Tae‐Eon Park, Licong Peng, Jinghua Liang, Ali Hallal, Fehmi Sami Yasin, Xichao Zhang, Kyung Song, Sung Jong Kim, Kwangsu Kim, Markus Weigand, Gisela Schütz, Simone Finizio, Jörg Raabe, K. Garcia, Jing Xia, Yan Zhou, Motohiko Ezawa, Xiaoxi Liu, Joonyeon Chang, Hyun Cheol Koo, Young Duck Kim, Mairbek Chshiev, A. Fert, Hongxin Yang, Xiuzhen Yu, Seonghoon Woo
Abstract
There have been extensive efforts to engineer magnetic two-dimensional materials with a view to using them for spintronic applications, in conjunction with other materials from the two-dimensional family. Here, the authors reveal N\'eel-type chiral magnetic skyrmions and their lattice formation in the van der Waals ferromagnet Fe${}_{3}$GeTe${}_{2}$ (FGT). They demonstrate the capability to drive an individual skyrmion by current along this van der Waals heterostructure on $h$-BN. Utilizing $a\phantom{\rule{0}{0ex}}b$ $i\phantom{\rule{0}{0ex}}n\phantom{\rule{0}{0ex}}i\phantom{\rule{0}{0ex}}t\phantom{\rule{0}{0ex}}i\phantom{\rule{0}{0ex}}o$ calculations, the study proposes the presence of Dzyaloshinskii-Moriya interaction at FGT interfaces with oxidized layers.