Metal-insulator transitions in pyrochlore oxides

被引：0

作者：

Tokura, Yoshinori ^{[1
,2
,3
]}

Motome, Yukitoshi ^{[1
]}

Ueda, Kentaro ^{[1
]}

机构：

[1] Univ Tokyo, Dept Appl Phys, Tokyo 1138656, Japan

[2] RIKEN Ctr Emergent Matter Sci CEMS, Wako 3510198, Japan

[3] Univ Tokyo, Tokyo Coll, Tokyo 1138656, Japan

来源：

REPORTS ON PROGRESS IN PHYSICS | 2025年 / 88卷 / 05期

关键词：

geometrical frustration; metal-insulator transition; correlated electron system; SPIN-FREEZING TRANSITION; PHASE-TRANSITION; ELECTRONIC-STRUCTURE; MAGNETIC-PROPERTIES; SYMMETRY-BREAKING; CRITICAL-BEHAVIOR; MOTT-INSULATOR; R2RU2O7; R; X-RAY; HALL;

D O I：

10.1088/1361-6633/add0c5

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Pyrochlore oxides with chemical formula of A2B2O7 exhibit a diverse range of electronic properties as a representative family of quantum materials. These properties mostly stem from strong electron correlations at the transition metal B site and typical geometrical frustration effects on the pyrochlore lattice. Furthermore, the coupling between the magnetic moments of the rare-earth A site and the conduction electrons at the B site, along with the relativistic spin-orbit coupling particularly affecting the 4d/5d electrons at the B site, gives rise to the topological characteristics of the correlated electrons. This review paper focuses on the metal-insulator transitions in pyrochlore oxides as evidence of the strong electron correlation, which is highlighted as a rich source of intriguing charge dynamics coupled with frustrated spin-orbital entangled magnetism.

引用

页数：45

共 280 条

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