CHIRAL COUPLING-BASED VALLEYTRONIC MAGNETOELECTRIC SPIN-ORBIT DEVICES

    公开(公告)号:US20240224814A1

    公开(公告)日:2024-07-04

    申请号:US18148240

    申请日:2022-12-29

    CPC classification number: H10N50/85 G11C11/161 H01F10/3286 H03K19/18 H10N52/80

    Abstract: Valleytronic magnetoelectric spin-orbit (MESO) logic devices comprise a charge-to-spin conversion input module that comprises a magnetoelectric capacitor. The input module converts a differential input voltage into a magnetization orientation of a ferromagnet possessing in-plane anisotropy (IPA) through exchange coupling between the IPA ferromagnet and the magnetoelectric layer of the capacitor. The magnetization orientation of the IPA ferromagnet can represent the logic state of the valleytronic MESO device. A spin-to-charge conversion output module comprises a ferromagnet possessing perpendicular magnetic anisotropy (PMA) and a 2D valleytronic material. The IMA and PMA ferromagnets are chirally-coupled through Dzaloshinskii-Moriya interaction, which causes the perpendicular magnetic orientation of the PMA ferromagnet to switch with the in-plane magnetization orientation of the IPA ferromagnet. The logic state of the device is read through injection of spin-polarized current from the PMA ferromagnet into the 2D valleytronic layer, which converts the injected spin-polarized current into a differential output current.

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