Electronic layer decoupling driven by density-wave order in La$_4$Ni$_3$O$_{10}$

Ziqiang Guan; Sophia F. R. TenHuisen; M. Tepie; Yifeng Zhao; Ezra Day-Roberts; Harrison LaBollita; Alexander M. Young; Xiaomeng Cui; Xinglong Chen; Filippo Glerean; Carl A. Guia; Mark P. M. Dean; Philip Kim; J. F. Mitchell; Antia S. Botana; Christopher C. Homes; Matteo Mitrano

doi:10.1103/qgl1-zh9f

paper

Electronic layer decoupling driven by density-wave order in La $_{4}$ Ni $_{3}$ O $_{10}$

arXiv:2601.08997 · doi:10.1103/qgl1-zh9f

Abstract

We probe the density-wave transition of the trilayer nickelate La $_{4}$ Ni $_{3}$ O $_{10}$ with polarization-resolved infrared spectroscopy. The low-energy electrodynamics is strongly anisotropic, with metallic in-plane and insulating out-of-plane character. In the ordered phase, the anisotropy grows more than an order of magnitude as the out-of-plane conductivity is sharply suppressed. We interpret this enhancement as an effective electronic decoupling of the Ni-O layers, driven by a spin-density-wave-induced redistribution of Ni- $d_{z^{2}}$ occupation within the trilayers. This electronic response is accompanied by clear shifts and splittings of the out-of-plane phonons, compatible with a density-wave instability of electronic origin.

31 pages, 22 figures, main text and supplementary material

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Electronic layer decoupling driven by density-wave order in La4​Ni3​O10​

Abstract

References in corpus (51)

Electronic layer decoupling driven by density-wave order in La $_{4}$ Ni $_{3}$ O $_{10}$