Sohn, Byungmin Kim, Bongju Park, Se Young Choi, Hwan Young Moon, Jae Young Choi, Taeyang Choi, Young Jai Zhou, Hua Choi, Jun Woo Bombardi, Alessandro Porter, Dan G. Chang, Seo Hyoung Han, Jung Hoon Kim, Changyoung 2024-01-19T14:31:19Z 2024-01-19T14:31:19Z 2021-10-21 2021-06-22 2643-1564 https://pubs.kist.re.kr/handle/201004/116848 We observed a humplike feature in Hall effects of SrRuO3 ultrathin films, and systematically investigated it by controlling thicknesses, temperatures and magnetic fields. The humplike feature is extremely stable, even surviving as a magnetic field is tilted by as much as 85 degrees. Based on the atomic-level structural analysis of a SrRuO3 ultrathin film with a theoretical calculation, we reveal that atomic rumplings at the thin-film surface enhance Dzyaloshinskii-Moriya interaction, which can generate stable chiral spin textures and a humplike Hall effect. Moreover, temperature dependent resonant x-ray measurements at the Ru L edge under a magnetic field showed that the intensity modulation of unexpected peaks was correlated with the hump region in the Hall effect. We verify that the two-dimensional property of ultrathin films generates stable noncoplanar spin textures having a magnetic order in a ferromagnetic oxide material. English AMER PHYSICAL SOC STRUCTURAL DISTORTIONS SKYRMION LATTICE DOMAIN-WALLS TRANSITION CHIRALITY DYNAMICS PHASE FIELD Stable humplike Hall effect and noncoplanar spin textures in SrRuO3 ultrathin films Article 10.1103/PhysRevResearch.3.023232 1 PHYSICAL REVIEW RESEARCH, v.3, no.2 PHYSICAL REVIEW RESEARCH 3 2 scopus 000664651600006 2-s2.0-85115896012 Physics, Multidisciplinary Physics Article STRUCTURAL DISTORTIONS SKYRMION LATTICE DOMAIN-WALLS TRANSITION CHIRALITY DYNAMICS PHASE FIELD SrRuO3