AI 中文总结
本文观测到铁磁氧化物超薄薄膜中源于自发面内自旋磁化耦合的反常能斯特效应，突破传统能斯特效应的正交性限制，为磁热电器件设计提供新可能。
AI 中文摘要
能斯特效应可在磁场或自旋磁化作用下将热流转换为横向电压，在未来电子器件的能量收集与热管理领域具有重要应用前景。然而，传统能斯特效应受限于正交性要求：外加磁场或自发磁化必须垂直于温度梯度与感应电压所定义的平面。本文中，我们报道了典型铁磁氧化物的对称调控超薄薄膜中观测到的反常能斯特效应，该效应源于其与自发面内自旋磁化的本征耦合。通过对磁场进行球面旋转的系统磁热电学测量，我们发现与面外轨道磁化相关的显著能斯特信号，其幅度与面外响应相当，且呈现稳健性。我们的研究表明，反常能斯特效应不再受正交性条件限制，为磁热电器材与器件的更灵活设计开辟了新机遇。
英文摘要
The Nernst effect, which enables the conversion of a heat current into a transverse voltage under magnetic field or spin magnetization, holds significant promise for energy harvesting and thermal management in future electronics. However, the conventional Nernst effect is fundamentally constrained by the orthogonality requirement that the applied field or spontaneous magnetization must be perpendicular to the plane defined by the temperature gradient and the induced voltage. Here we report that symmetry-tailored ultrathin films of a prototypical ferromagnetic oxide exhibit anomalous Nernst effect arising from intrinsic coupling to spontaneous in-plane spin magnetization. Systematic magnetothermoelectric measurements under spherical rotations of the magnetic field reveal that a pronounced Nernst signal, comparable in magnitude to the out-of-plane response, emerges robustly associated with out-of-plane orbital magnetization. Our findings demonstrate that the anomalous Nernst effect is no longer limited by the orthogonality condition, opening new opportunities for more flexible designs of magnetothermoelectric materials and devices.
Comments27 pages, 5 figures
