Investigation of continuous changes in the electric-field-induced electronic state in Bi(1-x)Ca(x)FeO(3-δ).
Investigation of continuous changes in the electric-field-induced electronic state in Bi(1-x)Ca(x)FeO(3-δ).
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DOI：
10.1039/c4cp02170c
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发表时间：
2014-07
期刊：
影响因子：
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通讯作者：
A. Ikeda-Ohno;Ji Soo Lim;T. Ohkochi;Chan-Ho Yang;J. Seidel
中科院分区：
文献类型：
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作者：
A. Ikeda-Ohno;Ji Soo Lim;T. Ohkochi;Chan-Ho Yang;J. Seidel
在相关氧化物系统中最有趣的现象之一是在能量相似的基态之间的掺杂驱动的竞争，例如，高温超导体和巨磁阻锰氧化物。最近有报道称，掺杂的多铁性材料也表现出这种相位竞争的一般概念。在这里，我们采用光电子发射显微镜（PEEM），以证明系统的电子结构的变化的证据Bi（1-x）Ca（x）FeO（3-δ）处理的电控空穴载流子掺杂，其结果清楚地与在相同的材料中观察到的电子电导率的局部调制。
Amongst the most interesting phenomena in correlated oxide systems are the doping-driven competitions between energetically similar ground states found in, e.g., high-Tc superconductors and colossal magnetoresistance manganites. It has recently been reported that doped multiferroics also exhibit this generic concept of phase competition. Here, we employ photoelectron emission microscopy (PEEM) to demonstrate evidence of systematic changes in the electronic structure of Bi(1-x)Ca(x)FeO(3-δ) treated by electrically controlled hole carrier doping, the outcome of which clearly correlates with the local modulation of electronic conductivity observed in the same material.