Understanding the physics of strongly correlated electronic systems has been a central issue in condensed matter physics for decades. In transition metal oxides, strong correlations characteristic of narrow d bands are at the origin of remarkable properties such as the opening of Mott gap, enhanced effective mass, and anomalous vibronic coupling, to mention a few. SrVO₃ with V⁴⁺ in a 3d¹ electronic configuration is the simplest example of a 3D correlated metallic electronic system. Here, the authors' focus on the observation of a (roughly) quadratic temperature dependence of the inverse electron mobility of this seemingly simple system, which is an intriguing property shared by other metallic oxides. The systematic analysis of electronic transport in SrVO₃ thin films discloses the limitations of the simplest picture of e–e correlations in a Fermi liquid (FL); instead, it is shown show that the quasi-2D topology of the Fermi surface (FS) and a strong electron–phonon coupling, contributing to dress carriers with a phonon cloud, play a pivotal role on the reported electron spectroscopic, optical, thermodynamic, and transport data. The picture that emerges is not restricted to SrVO₃ but can be shared with other 3d and 4d metallic oxides.

中文翻译：

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SrVO3 中的电子-声子耦合和电子-声子散射

几十年来，理解强相关电子系统的物理学一直是凝聚态物理学的核心问题。在过渡金属氧化物中，窄 d 带特征的强相关性是莫特间隙打开、有效质量增强和异常振动耦合等显着特性的起源，仅举几例。SrVO ₃与 V ⁴⁺ 在 3d ¹ 电子配置中是 3D 相关金属电子系统的最简单的例子。在这里，作者专注于观察这个看似简单的系统的逆电子迁移率的（大致）二次温度依赖性，这是其他金属氧化物共有的有趣特性。SrVO电子输运的系统分析₃ 薄膜揭示了费米液体 (FL) 中 e-e 相关性的最简单图片的局限性；相反，它表明费米表面 (FS) 的准二维拓扑结构和强电子-声子耦合，有助于用声子云修饰载体，在报告的电子光谱、光学、热力学、和传输数据。出现的图片不仅限于 SrVO ₃  ，还可以与其他 3d 和 4d 金属氧化物共享。