多铁性非共线磁体中的电控自旋电子学
Electrically Switchable Spintronics in a Multiferroic Altermagnet
AI总结：
该研究提出的二维晶格模型可通过外电场同时调控非共线磁有序、电极化与自旋极化输运，为结合补偿磁体优势与铁电低功耗架构的下一代自旋电子器件提供了物理蓝图。
AI中文摘要：
我们提出了一个二维晶格的最简模型，该模型在自发对称性破缺时，会同时形成非共线磁有序、有限电极化以及自旋极化输运响应，且所有这些特性均受外电场调控。通过将二聚化非共线磁体与外电场耦合，我们证明这三个序参量不仅相容，还存在动态纠缠，因此切换其中一个（例如用电场反转极化）必然会重新配置另外两个。该模型为设计下一代自旋电子逻辑器件和纯自旋电流存储器件提供了清晰的物理蓝图，这类器件结合了补偿磁体超快、无杂散场的优势，以及铁电体的低功耗开关架构。
英文摘要：
We introduce a minimal model of a two-dimensional lattice that, upon spontaneous symmetry breaking, simultaneously develops altermagnetic order, a finite electric polarization, and a spin-polarized transport response, all of which are controlled by an external electric field. By coupling a dimerized altermagnet to an external electric field, we show that the three order parameters are not merely compatible but dynamically entangled, so that switching one (for instance, reversing the polarization with an electric field) necessarily reconfigures the other two. We show that this model offers a clear physical blueprint for designing next-generation spintronic logic and pure spin current memdevices that merge the ultrafast, stray-field-free advantages of compensated magnets with the low-power switching architectures of ferroelectrics.
