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arXiv 2602.09975cond-mat.mtrl-scicond-mat.supr-con
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LaBi₂薄膜中的相对论效应

Relativistic Effects in LaBi$_2$ Thin Films

California Institute of Technology(加州理工学院);Pohang University of Science and Technology(浦项科技大学);California State University Northridge(北岭加利福尼亚州立大学);W. M. Keck Computational Materials Theory Center(W.M.凯克计算材料理论中心);Institute for Quantum Information and Matter(量子信息与物质研究所);Korea Institute for Advanced Study(韩国高等研究院)

Reiley Dorrian, Sungmin Song, Jinwoong Kim, Mizuki Ohno, Seung-Hoon Jhi, Nicholas Kioussis, Joseph Falson

AI总结:

本研究通过化学替代探索LaBi₂薄膜中的相对论效应,发现其电子能带结构的修正导致了良好的金属性和超导性。

摘要:

在晶体量子材料中,化学替代是一种强有力的手段,用于探索强自旋轨道耦合对其结构和电子性质的影响。在本工作中,我们研究了LaBi₂类层状正方形网金属间化合物薄膜。我们报告了LaBi₂以纯净的逐层生长模式生长,将其分类为良好的金属,在约0.55 K时表现出超导性。与LaSb₂相比,我们将LaBi₂中增强的金属行为和改进的生长动力学归因于其电子能带结构中的显著相对论修正,以及由此对表面能和本征声子散射的影响。

英文摘要:

Chemical substitution in crystalline quantum materials is a powerful way to explore the consequences of strong spin-orbit coupling on their structural and electronic properties. In this work, we present an investigation of thin films of the La$\textit{Pn}_2$ ($\textit{Pn}$~=~Sb, Bi) class of layered square-net intermetallics. We report the growth of LaBi$_2$ with a pristine layer-by-layer growth mode, classifying it as a good metal displaying superconductivity at $\sim$0.55~K. Compared to LaSb$_2$, we attribute the enhanced metallic behavior and improved growth dynamics of LaBi$_2$ to significant relativistic corrections to its electronic band structure and the resulting impact on both surface energy and intrinsic phonon scattering.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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