title: Spin-Glass-Like Behavior and Topological Hall Effect in SrRuO3/SrIrO3Superlattices for Oxide Spintronics Applications.
abstract: The heterostructure interface provides a powerful platform for exploring rich emergent phenomena, such as interfacial superconductivity and nontrivial topological surface states. Here, SrRuO3/SrIrO3superlattices were epitaxially synthesized. The magnetic and magneto-transport properties of these superlattices were characterized. A broad cusp-type splitting in the zero-field-cooling/field-cooling temperature-dependent magnetization and magnetization relaxation, which follows the modified stretched function model, accompanied by double hysteresis magnetization loops were demonstrated. These physical effects were modulated by the SrIrO3layer thickness, which confirms the coexistence of interfacial spin glass and ferromagnetic ordering in the superlattices. In addition, the topological Hall effect was observed at low temperatures, and it is weakened with the increase of the SrIrO3layer thickness. These results suggest that a noncoplanar spin texture is generated at the SrRuO3/SrIrO3interfaces because of the interfacial Dzyaloshinskii-Moriya interaction. This work demonstrates that SrIrO3can effectively induce interfacial Dzyaloshinskii-Moriya interactions in superlattices, which would serve as a mechanism to develop spintronic devices with perovskite oxides.
authors.affiliation: National Laboratory of Solid State Microstructures & Department of Materials Science and Engineering, Nanjing University , Nanjing 210093, China.
authors.forename: Bin
authors.initials: B
authors.lastname: Pang
authors.affiliation: National Laboratory of Solid State Microstructures & Department of Materials Science and Engineering, Nanjing University , Nanjing 210093, China.|Max Planck POSTECH Center for Complex Phase Materials, Max Planck POSTECH/Korea Research Initiative (MPK) , Gyeongbuk 376-73, Korea.
authors.forename: Lunyong
authors.identifier: http://orcid.org/0000-0002-1193-5966
authors.initials: L
authors.lastname: Zhang
authors.affiliation: National Laboratory of Solid State Microstructures & Department of Physics, Nanjing University , 210093 Nanjing, China.
authors.forename: Y B
authors.initials: YB
authors.lastname: Chen
authors.affiliation: National Laboratory of Solid State Microstructures & Department of Materials Science and Engineering, Nanjing University , Nanjing 210093, China.
authors.forename: Jian
authors.initials: J
authors.lastname: Zhou
authors.affiliation: National Laboratory of Solid State Microstructures & Department of Materials Science and Engineering, Nanjing University , Nanjing 210093, China.
authors.forename: Shuhua
authors.initials: S
authors.lastname: Yao
authors.affiliation: National Laboratory of Solid State Microstructures & Department of Materials Science and Engineering, Nanjing University , Nanjing 210093, China.
authors.forename: Shantao
authors.initials: S
authors.lastname: Zhang
authors.affiliation: National Laboratory of Solid State Microstructures & Department of Materials Science and Engineering, Nanjing University , Nanjing 210093, China.
authors.forename: Yanfeng
authors.initials: Y
authors.lastname: Chen
keywords: Dzyaloshinskii−Moriya interaction; noncoplanar spin ordering; spin glass; spin−orbit interaction; superlattices; topological Hall effect