AI 中文总结
本综述结合光电子能谱与晶体生长技术进展，研究镧系基晶体的体相及表面现象，解决4f系统物理核心问题，为设计新型镧系基架构提供机遇。
AI 中文摘要
强局域化4f电子与巡游spd价态的相互作用产生了多种关联现象与性质，使镧系材料成为大量研究的焦点。除体相外，其表面尤为受关注：配位数降低、晶体电场改变、反演对称性破缺结合强自旋-轨道耦合，以及表面态与共振的出现，大幅重塑了4f主导的电子和磁性质，进而催生了与低维系统及其应用高度相关的新功能。本综述总结了光电子能谱技术的进展，结合改进的晶体生长技术，如何实现对镧系基晶体体相与表面现象的详细研究。在简要概述20世纪70年代至90年代的关键发展后，我们讨论了近期进展，重点关注作者及其合作者的系统研究，这些研究构成了连贯的研究主线，包括揭示k分辨的f-spd杂化、近藤晶格中f衍生费米面随温度的形成与演化、层依赖的4f磁各向异性、非磁体相基态体系中铁磁有序表面的出现。这条连贯的研究主线解决了4f系统物理的核心问题，并为设计新型镧系基架构（包括具有新奇物理性质和功能的异质结构与超分子复合物）提供了机遇。
英文摘要
The interplay of strongly localized 4$f$ electrons with itinerant spd-valence states gives rise to a wide range of correlated phenomena and properties that place lanthanide materials at the focus of considerable research efforts. Beyond the bulk, their surfaces are of particular interest, where the reduced coordination, a modified crystal electric field, broken inversion symmetry in combination with strong spin-orbit coupling, and the emergence of surface states and resonances considerably reshape 4$f$-driven electronic and magnetic properties. This, in turn, enables novel functionalities of particular relevance for low-dimensional systems and their applications. This review summarizes how advances in photoelectron spectroscopies, together with improved crystal growth, have enabled detailed insights into bulk and surface phenomena of lanthanide-based crystals. After a brief overview of key developments from the 1970s to the 1990s, we discuss recent progress, focusing on systematic studies by the authors and collaborators that form a coherent line of research. These include the unveiling of $k$-resolved $f-spd$ hybridization, the formation and evolution with temperature of $f$-derived Fermi surface in Kondo lattices, layer-dependent 4$f$ magnetic anisotropy, the emergence of ferromagnetically ordered surfaces in systems with non-magnetic bulk ground state. This coherent line of research addresses core questions in the physics of 4$f$ systems and opens opportunities for engineering novel lanthanide-based architectures, including heterostructures and supramolecular complexes with novel physical properties and functionalities.
CommentsMesoscience & Nanotechnology, 1, 2026
