发表机构
Material Science Division, Argonne National Laboratory（阿贡国家实验室材料科学部）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本研究通过磁电导量子修正测量，揭示三层RP镍酸盐中二维弱局域化特征，表明其为准二维无序费米液体，压力可抑制该特征并可能诱导超导转变。
AI 中文摘要
Ruddlesden-Popper (RP) 镍酸盐在压力抑制相互交织的电荷密度波和自旋密度波时表现出超导电性。在此，我们利用磁电导的量子修正测量作为探针，研究单晶三层RP镍酸盐Pr4Ni3O10和La4Ni3O10的维度性、相位相干性及散射机制。我们观察到二维弱局域化（WL）的特征，表明面内电子输运处于量子扩散区，而面外输运是非相干的，电子基态为准二维无序费米液体。施加高达3 GPa的压力持续抑制WL特征，可能标志着二维/三维维度交叉以及最终由压力驱动的超导转变。
英文摘要
Ruddlesden-Popper (RP) nickelates superconduct when pressure suppresses intertwined charge- and spin-density waves. Here, we employ measurements of quantum corrections to magnetoconductivity as a probe of the dimensionality, phase coherence, and scattering mechanisms of the underlying single crystal trilayer RP nickelate Pr4Ni3O10 and La4Ni3O10. We observe signatures of 2D Weak Localization (WL), implying that the in-plane electron transport is in the quantum diffusive regime, while the out-of-plane transport is incoherent, and the electronic ground state is a quasi-2D disordered Fermi liquid. Application of pressure up to 3 GPa continuously suppresses signatures of WL, potentially signaling a 2D/3D dimensional crossover and an eventual pressure-driven transition into a superconductor.
Comments19 pages and 4 figures for manuscript, and 11 pages and 3 figures for supplementary information
