AI 中文总结
研究提出铁磁反铁磁体概念，以 CrSb 薄片实现，集成铁电体和 Cu 间隔层设计出铁磁反铁磁-铁电阀，该阀有高自旋过滤率等特性，确立了铁磁反铁磁体在多场控制等自旋电子学和电子学方面的丰富平台地位。
AI 中文摘要
反铁磁体结合了反铁磁体的零杂散场和铁磁体的自旋极化，在自旋电子学应用中显示出巨大潜力。本文提出铁磁反铁磁体作为反铁磁家族的一个独特子类，其中对称不等价的反铁磁子晶格具有不同的尼尔矢量，可防止交替自旋分裂的相互抵消，并赋予对扰动的固有鲁棒性。这一概念在三原子层 CrSb(110)薄片中得以实现，其表现出 344 meV 的自旋分裂、适度的单轴磁各向异性和 657 K 的高尼尔温度。观察到磁光克尔效应和反常霍尔效应。将这种铁磁反铁磁 CrSb 与铁电体 Sc2CO2 和 Cu 间隔层集成，设计了一个铁磁反铁磁-铁电阀。该器件显示出约 10^3%的平衡隧穿磁电阻和电阻，在偏置、热或光场下的非平衡幅度达到约 10^4%，自旋过滤率高达 90%。实现了负微分电阻和光电流效应，以及 283.8 的光电流消光比。这些发现确立了铁磁反铁磁体作为多场控制、超紧凑和自供电自旋电子学和电子学的丰富平台。
英文摘要
Altermagnets combine the zero-stray-field of antiferromagnets with the spin polarization of ferromagnets, showing great potential for spintronic applications. Here, we propose ferrialtermagnetism as a distinct subclass of altermagnetic family, where symmetry-inequivalent altermagnetic sublattices possess nonidentical Neel vectors, preventing mutual cancellation of alternating spin splitting and conferring intrinsic robustness against perturbations. This concept is realized in the three-atomic-layer CrSb (110) flakes, which exhibits spin splitting of 344 meV, moderate uniaxial magnetic anisotropy, and high Neel temperature of 657 K. The magneto-optical Kerr and the anomalous Hall effects are observed. Integrating this ferrialtermagnetic CrSb with ferroelectric Sc2CO2 and Cu spacer, we design an ferrialtermagnetic-ferroelectric valve. This device displays equilibrium tunneling magnetoresistance and electroresistance of ~10^3%, and non-equilibrium magnitudes under bias, thermal, or light field reaches ~10^4% with high spin filtering of 90%. The negative differential resistance and photogalvanic effects, and photocurrent extinction ratio of 283.8 are achieved. These findings establish ferrialtermagnetism as a fertile platform for multi-field-controlled, ultracompact, and self-powered spintronics and electronics.
Comments30 pages, 3 tables, and 6 figures
