講演情報
[25a-P01-33]Interface-modification effect on spin Hall and orbital Hall conductivities in Fe/MgO from first-principles calculations
〇(D)Yosephine Novita Apriati1, Kenji Nawa1,2, Kohji Nakamura1 (1.Mie University, 2.NIMS)
キーワード：
Interface-modification、Spin Hall and Orbital Hall effects、Fe/MgO
Magnetic materials that generate pure spin current with high charge-to-spin conversion have become important from fundamental and device-application points of view, especially in designing a low energy and fast operation spintronics devices. Recent interest has been concentrated to another degree of freedom, the orbital angular momentum called orbital current. The orbital Hall effect (OHE) generated by the orbital current is found to be a more fundamental property than the spin Hall effect (SHC) as it arises independently from the spin orbit coupling (SOC). This work is focusing on the intrinsic spin Hall and orbital Hall conductivities (SHC and OHC) in the Fe/MgO(001) structure to investigate the interface-modification effect by inserting an atomic monolayer (ML) of 5d-TM (Ta, W, Re, Os, and Pt) at the interface. We consider the structure of Fe(1ML)/5d-HM(1ML)/MgO(3ML) with a comparison of pristine Fe(1ML)/MgO(3ML) system where in-plane lattice constant is fixed to the bulk Fe (2.86 Å). The SHC and OHC are calculated on the basis of Kubo formula using first-principles calculations of all-electron full-potential linarized augmented plane wave method within generalized gradient approximation.