The relativistic Mott insulator Sr2IrO4 driven by large spin-orbit interaction is known for the Jeff = 1/2 antiferromagnetic state which closely resembles the electronic structure of parent compounds of superconducting cuprates. Here, we report the realization of hole-doped Sr2IrO4 by means of interfacial charge transfer in Sr2IrO4/LaNiO3 heterostructures. X-ray photoelectron spectroscopy on Ir 4f edge along with the X-ray absorption spectroscopy at Ni L2 edge confirmed that 5d electrons from Ir sites are transferred onto Ni sites, leading to markedly electronic reconstruction at the interface. Although the Sr2IrO4/LaNiO3 heterostructure remains non-metallic, we reveal that the transport behavior is no longer described by the Mott variable range hopping mode, but by the Efros-Shklovskii model. These findings highlight a powerful utility of interfaces to realize emerging electronic states of the Ruddlesden-Popper phases of Ir-based oxides.
Topochemically-engineered coexistence of charge and spin orders in intercalated endotaxial heterostructures
University of California, Berkeley（加州大学伯克利分校）；Molecular Foundry, Lawrence Berkeley National Laboratory（劳伦斯伯克利国家实验室分子发现中心）；Jawaharlal Nehru Centre for Advanced Scientific Research（贾瓦哈拉尔·尼赫鲁高级科学研究中心）；Max-Planck-Institute for Chemical Physics of Solids（马克斯·普朗克固体化学物理研究所）
Symmetry-engineered and electrically tunable in-plane anomalous Hall effect in oxide heterostructures
Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China（合肥微尺度物质科学国家研究中心，中国科学技术大学）；Department of Physics, University of Science and Technology of China（中国科学技术大学物理学院）；Key Laboratory of Materials Physics, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences（中国科学院合肥物质科学研究院固体物理研究所材料物理重点实验室）；School of Physics, Northwest University（西北大学物理学院）；Anhui Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory, Chinese Academy of Sciences（中国科学院强磁场科学中心极端条件凝聚态物理安徽省重点实验室）
Modulation of Quantum Transport in Complex Oxide Heterostructures with Proton Implantation
National University of Singapore（新加坡国立大学）；Centre for Ion Beam Applications (CIBA), Department of Physics, National University of Singapore（新加坡国立大学物理学院离子束应用中心）；Leibniz International Joint Research Center of Materials Sciences of Anhui Province, Institutes of Physical Science and Information Technology, Anhui University（安徽大学物理科学与技术研究院安徽省材料科学 Leibniz 国际联合研究中心）；Stony Brook Institute at Anhui University, Anhui University（安徽大学石溪研究所）
