2018/04/30 by Xin Ma, Guoqiang Yu, Seyed A. Razavi +7
Physics and Astronomy · #Antiferromagnetism #Condensed matter physics #Conductance #Ferromagnetism #Magnetic properties of thin films #Mixing (physics) #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #Spin (aerodynamics) #Theoretical and Computational Physics #cond-mat.mtrl-sci
paper · pdf · doi:10.1103/physrevb.98.104428
published as Phys. Rev. B 98, 104428 (2018)
openalex created_date 2018/04/24 · arxiv created 2018/07/19 · openalex publication_date 2018/09/26 · arxiv updated 2018/10/03 · openalex updated_date 2026/08/06
The rich interaction phenomena at antiferromagnet (AFM)/ferromagnet (FM) interfaces are key ingredients in AFM spintronics, where many underlying mechanisms remain unclear. Here we report on a correlation observed between the interfacial Dzyaloshinskii-Moriya interaction (DMI) DS and effective spin-mixing conductance geff^\ensuremath\uparrow\ensuremath\downarrow at the IrMn/CoFeB interface. Both DS and geff^\ensuremath\uparrow\ensuremath\downarrow are quantitatively determined with Brillouin light-scattering measurements, and increase with IrMn thickness in the range of 2.5\ensuremath∼7.5 nm. Such correlation likely originates from the AFM-states-mediated spin-flip transitions in the FM, which promote both the interfacial DMI and spin-pumping effect. Our findings provide deeper insight into the AFM-FM interfacial coupling for future spintronic design.