Nature materials · 2024
Manipulating chiral spin transport with ferroelectric polarization.
СтатьяНазвание и аннотация: Перевод пока не подготовлен
Обработка статьи · этапы, ошибки и управление
Загрузка состояния…
Ошибки и ограничения
История · было → стало
Состояние обновляется каждые 5 секунд, пока блок открыт. Процент показывается только там, где известен объём работы. Пауза останавливает продолжение этапа; текущий запрос к источнику может завершиться.
Huang Xiaoxi, Chen Xianzhe, Li Yuhang, Mangeri John, Zhang Hongrui, Ramesh Maya, Taghinejad Hossein, Meisenheimer Peter, Caretta Lucas, Susarla Sandhya, Jain Rakshit, Klewe Christoph, Wang Tianye, Chen Rui, Hsu Cheng-Hsiang, Harris Isaac, Husain Sajid, Pan Hao, Yin Jia, Shafer Padraic, Qiu Ziqiang, Rodrigues Davi R, Heinonen Olle, Vasudevan Dilip, Íñiguez Jorge, Schlom Darrell G, Salahuddin Sayeef, Martin Lane W, Analytis James G, Ralph Daniel C, Cheng Ran, Yao Zhi, Ramesh Ramamoorthy
Аннотация
A magnon is a collective excitation of the spin structure in a magnetic insulator and can transmit spin angular momentum with negligible dissipation. This quantum of a spin wave has always been manipulated through magnetic dipoles (that is, by breaking time-reversal symmetry). Here we report the experimental observation of chiral spin transport in multiferroic BiFeO3 and its control by reversing the ferroelectric polarization (that is, by breaking spatial inversion symmetry). The ferroelectrically controlled magnons show up to 18% modulation at room temperature. The spin torque that the magnons in BiFeO3 carry can be used to efficiently switch the magnetization of adjacent magnets, with a spin-torque efficiency comparable to the spin Hall effect in heavy metals. Utilizing such controllable magnon generation and transmission in BiFeO3, an all-oxide, energy-scalable logic is demonstrated composed of spin-orbit injection, detection and magnetoelectric control. Our observations open a new chapter of multiferroic magnons and pave another path towards low-dissipation nanoelectronics.