| Literature DB >> 28369053 |
Kaiming Cai1, Meiyin Yang1, Hailang Ju2, Sumei Wang3, Yang Ji1, Baohe Li2, Kevin William Edmonds4, Yu Sheng1, Bao Zhang1, Nan Zhang1, Shuai Liu2, Houzhi Zheng1, Kaiyou Wang1.
Abstract
All-electrical and programmable manipulations of ferromagnetic bits are highly pursued for the aim of high integration and low energy consumption in modern information technology. Methods based on the spin-orbit torque switching in heavy metal/ferromagnet structures have been proposed with magnetic field, and are heading toward deterministic switching without external magnetic field. Here we demonstrate that an in-plane effective magnetic field can be induced by an electric field without breaking the symmetry of the structure of the thin film, and realize the deterministic magnetization switching in a hybrid ferromagnetic/ferroelectric structure with Pt/Co/Ni/Co/Pt layers on PMN-PT substrate. The effective magnetic field can be reversed by changing the direction of the applied electric field on the PMN-PT substrate, which fully replaces the controllability function of the external magnetic field. The electric field is found to generate an additional spin-orbit torque on the CoNiCo magnets, which is confirmed by macrospin calculations and micromagnetic simulations.Entities:
Year: 2017 PMID： 28369053 DOI： 10.1038/nmat4886
Source DB: PubMed Journal: Nat Mater ISSN： 1476-1122 Impact factor: 43.841