Room-Temperature van der Waals Perpendicular Ferromagnet Through Interlayer Magnetic Coupling
Yi Cao, Xiaomin Zhang, Xianpeng Zhang, Faguang Yan, Ziao Wang, Wenkai Zhu, Hao Tan, Vitaly N. Golovach, Houzhi Zheng, Kaiyou Wang
Abstract
High-density spintronic applications such as digital memory require strong perpendicular magnetic anisotropy (PMA), to maintain data stability above room temperature, which so far has been beyond the reach of stacked van der Waals ferromagnets. Here the authors demonstrate that the interlayer exchange coupling in a magnetic multilayer can effectively tune the Curie temperature and PMA of sandwiched two-dimensional (2D) Fe${}_{3}$GeTe${}_{2}$. The successful realization of room-temperature 2D ferromagnets bearing fully nonvolatile out-of-plane spin information could bring 2D spintronic applications to reality.
Topics & Concepts
SpintronicsFerromagnetismCondensed matter physicsvan der Waals forceCurie temperatureMaterials sciencePerpendicularCoupling (piping)Inductive couplingMagnetic anisotropySpin (aerodynamics)Realization (probability)PhysicsMagnetic fieldMagnetizationQuantum mechanicsThermodynamicsMoleculeMetallurgyMathematicsStatisticsGeometry2D Materials and ApplicationsMultiferroics and related materialsGraphene research and applications