Jeong, Seung Gyo Cho, Seong Won Song, Sehwan Oh, Jin Young Jeong, Do Gyeom Han, Gyeongtak Jeong, Hu Young Mohamed, Ahmed Yousef Noh, Woo-suk Park, Sungkyun Lee, Jong Seok Lee, Suyoun Kim, Young-Min Cho, Deok-Yong Choi, Woo Seok 2024-06-13T02:00:25Z 2024-06-13T02:00:25Z 2024-06-13 2024-07 1530-6984 https://pubs.kist.re.kr/handle/201004/150061 Magnetic anisotropy in atomically thin correlated heterostructures is essential for exploring quantum magnetic phases for next-generation spintronics. Whereas previous studies have mostly focused on van der Waals systems, here we investigate the impact of dimensionality of epitaxially grown correlated oxides down to the monolayer limit on structural, magnetic, and orbital anisotropies. By designing oxide superlattices with a correlated ferromagnetic SrRuO3 and nonmagnetic SrTiO3 layers, we observed modulated ferromagnetic behavior with the change of the SrRuO3 thickness. Especially, for three-unit-cell-thick layers, we observe a significant 1500% improvement of the coercive field in the anomalous Hall effect, which cannot be solely attributed to the dimensional crossover in ferromagnetism. The atomic-scale heterostructures further reveal the systematic modulation of anisotropy for the lattice structure and orbital hybridization, explaining the enhanced magnetic anisotropy. Our findings provide valuable insights into engineering the anisotropic hybridization of synthetic magnetic crystals, offering a tunable spin order for various applications. English American Chemical Society Dimensionality Engineering of Magnetic Anisotropy from the Anomalous Hall Effect in Synthetic SrRuO3 Crystals Article 10.1021/acs.nanolett.4c01536 1 Nano Letters, v.24, no.26, pp.7979 - 7986 Nano Letters 24 26 7979 7986 N scie scopus 001238259600001 Chemistry, Multidisciplinary Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Physics, Condensed Matter Chemistry Science & Technology - Other Topics Materials Science Physics Article HETEROSTRUCTURES SPINTRONICS Low-dimensional magnetism SrRuO3 magnetic anisotropy engineering oxide superlattice atomic-scale epitaxy correlated magnetic order