掺杂了镧和锰的 SrRuO3 的晶格、磁性和传输

IF 1.6 4区物理与天体物理 Q3 PHYSICS, APPLIED

Journal of Superconductivity and Novel Magnetism Pub Date : 2024-05-24 DOI:10.1007/s10948-024-06763-0

Shuai Fu, Yiyu Tan, Xiaofan Sun, Zheng Tang, Shulin Jiao, H. L. Cai, F. M. Zhang, A. M. Zhang, X. S. Wu

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引用次数: 0

摘要

在这里，我们成功地在 SrRuO3 中同时引入了等量的 La 和 Mn 离子。随着 La/Mn 掺杂量的增加，所有成分都在 Pnma 中结晶，晶格常数和 RuO6 八面体畸变一起减小。在 x ≥ 0.23 时，可观察到铁磁性到自旋玻璃的磁性行为。由于晶格中金属混合物的无序化，在较低温度下出现了金属-绝缘体转变（MIT）。RuO6 八面体的回缩增加了 Ru t2g-O 2p 轨道的重叠，拓宽了 Ru 4d 带宽，导致电子-电子相互作用减弱，从而可能降低电子和热导率。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Lattice, Magnetism, and Transport in SrRuO3 Co-doped with La and Mn

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Lattice, Magnetism, and Transport in SrRuO3 Co-doped with La and Mn

Here, equal numbers of La and Mn ions are successfully introduced simultaneously in SrRuO3. With increasing La/Mn doping, all compositions crystallize in Pnma with the lattice constant, together with the RuO₆ octahedral distortion, decreases. Ferromagnetism-to-spin glass magnetic behavior is observed at x ≥ 0.23. A metal–insulator transition (MIT) occurs at lower temperatures, resulting from the disordering of the metal mixture in the lattice. The retraction of the RuO₆ octahedron increases the overlap of the Ru t_2g–O 2p orbitals and broadens the Ru 4d bandwidth, leading to weaker electron–electron interactions, which may decrease the electronic and thermal conductivity.

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来源期刊

Journal of Superconductivity and Novel Magnetism 物理-物理：凝聚态物理

CiteScore

3.70

自引率

11.10%

发文量

342

审稿时长

3.5 months

期刊介绍： The Journal of Superconductivity and Novel Magnetism serves as the international forum for the most current research and ideas in these fields. This highly acclaimed journal publishes peer-reviewed original papers, conference proceedings and invited review articles that examine all aspects of the science and technology of superconductivity, including new materials, new mechanisms, basic and technological properties, new phenomena, and small- and large-scale applications. Novel magnetism, which is expanding rapidly, is also featured in the journal. The journal focuses on such areas as spintronics, magnetic semiconductors, properties of magnetic multilayers, magnetoresistive materials and structures, magnetic oxides, etc. Novel superconducting and magnetic materials are complex compounds, and the journal publishes articles related to all aspects their study, such as sample preparation, spectroscopy and transport properties as well as various applications.