arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1402.0893cond-mat.str-el
收藏

CaIrO3:一种jeff = 1/2基态以上的自旋轨道莫特绝缘体

CaIrO3: a Spin-Orbit Mott Insulator Beyond the jeff = 1/2 Ground State

M. Moretti Sala, K. Ohgushi, A. Al-Zein, Y. Hirata, G. Monaco, M. Krisch

摘要:

在CaIrO 3的电子相关,自旋轨道耦合,和tetraxos晶体场分裂的预测是可比的强度。然而,其基态的性质仍然是争论的对象,具有矛盾的实验和理论结果。我们探测的基态的CaIrO 3和评估有效的四晶场分裂和自旋轨道耦合在这个系统中发挥的共振非弹性X射线散射。我们得出结论,绝缘CaIrO 3是不是杰夫= 1/2铱酸盐和讨论的后果,我们发现以前的实验的解释。特别是,我们澄清了如何莫特绝缘状态的铱酸盐可以很容易地扩展到jeff = 1/2基态。

英文摘要:

In CaIrO3 electronic correlation, spin-orbit coupling, and tetragonal crystal field splitting are predicted to be of comparable strength. However, the nature of its ground state is still object of debate, with contradictory experimental and theoretical results. We probe the ground state of CaIrO3 and assess the effective tetragonal crystal field splitting and spin-orbit coupling at play in this system by means of resonant inelastic x-ray scattering. We conclude that insulating CaIrO3 is not a jeff = 1/2 iridate and discuss the consequences of our finding to the interpretation of previous experiments. In particular, we clarify how the Mott insulating state in iridates can be readily extended beyond the jeff = 1/2 ground state.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑