Sr$_4$Ru$_3$O$_{10}$中自旋轨道耦合诱导的范霍夫奇点邻近Lifshitz相变
强关联电子
2024-04-15 v3
摘要
费米能附近的范霍夫奇点(VHss)在强关联电子材料的物理中常起显著作用。VHss产生的态密度发散可触发超导、铁磁、变磁性和密度波序等新相的出现。因此,详细理解这些VHss的电子结构对于准确描述此类不稳定性至关重要。此处,我们研究三层锶钌酸盐SrRuO的低能电子结构,利用角分辨光电子能谱和毫开尔文扫描隧道显微镜识别出丰富的VHss层级。通过分辨电子能谱与准粒子干涉的对比,我们确定了VHss的结构并证明了自旋轨道耦合在塑造它们中的关键作用。我们由此建立了一个最小模型,从中识别出在铁磁金属中驱动场致Lifshitz相变的新机制。
引用
@article{arxiv.2303.05587,
title = {Spin-orbit coupling induced Van Hove singularity in proximity to a Lifshitz transition in Sr$_4$Ru$_3$O$_{10}$},
author = {Carolina A. Marques and Philip A. E. Murgatroyd and Rosalba Fittipaldi and Weronika Osmolska and Brendan Edwards and Izidor Benedičič and Gesa-R. Siemann and Luke C. Rhodes and Sebastian Buchberger and Masahiro Naritsuka and Edgar Abarca-Morales and Daniel Halliday and Craig Polley and Mats Leandersson and Masafumi Horio and Johan Chang and Raja Arumugam and Mariateresa Lettieri and Veronica Granata and Antonio Vecchione and Phil D. C. King and Peter Wahl},
journal= {arXiv preprint arXiv:2303.05587},
year = {2024}
}
备注
25 pages, 4 figures and supplementary material