Ca$_{1.8}$Sr$_{0.2}$RuO$_4$中费米液体准粒子的轨道选择性失效
强关联电子
2019-04-17 v1
摘要
我们呈现了CaSrRuO的详尽角分辨光电子能谱研究。揭示了四条不同的能带，并沿Ru-O键方向通过光偏振分析并与动力学平均场理论计算比较确定了其轨道特征。归属于轨道的能带显示费米液体行为，具有四倍准粒子质量重正化。与主要能带特征相关的极重费米子被显示为呈现非费米液体行为。因此我们证明CaSrRuO是一种具有轨道选择性费米液体准粒子失效的混合金属。
引用
@article{arxiv.1904.07625,
title = {Orbitally selective breakdown of Fermi liquid quasiparticles in Ca$_{1.8}$Sr$_{0.2}$RuO$_4$},
author = {Denys Sutter and Minjae Kim and Christian Matt and Masafumi Horio and Rosalba Fittipaldi and Antonio Vecchione and Veronica Granata and Kevin Hauser and Yasmine Sassa and Gianmarco Gatti and Marco Grioni and Moritz Hoesch and Timur Kim and Emile Rienks and Nicholas Plumb and Ming Shi and Titus Neupert and Antoine Georges and Johan Chang},
journal= {arXiv preprint arXiv:1904.07625},
year = {2019}
}