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锰氧化物单晶薄膜电荷-轨道-自旋有序的控制及相关效应
  • 项目名称：锰氧化物单晶薄膜电荷-轨道-自旋有序的控制及相关效应
  • 项目类别：面上项目
  • 批准号：10674169
  • 申请代码：A040207
  • 项目来源：国家自然科学基金
  • 研究期限：2007-01-01-2009-12-31
  • 项目负责人：孙继荣
  • 负责人职称：研究员
  • 依托单位：中国科学院物理研究所
  • 批准年度：2006
中文摘要：

电荷-轨道-自旋的有序/无序的调控是钙钛矿结构锰氧化物研究的核心问题。本课题通过应变调节、相变诱导、外场控制等方法，系统研究了如何在单晶薄膜中实现各类电荷-轨道-自旋有序，如何实现轨道-自旋排列方向的控制。通过调节薄膜中应变的强度与取向，我们成功在几类典型的锰氧化物材料中获得了理想的电荷、轨道序，发现电荷、轨道序转变导致载流子浓度e-指数型降低；利用压力对应变的调节，看到了电荷轨道序随着应变过程的演变规律；通过引入轨道序界面调节层，在锰氧化物基异质结中观察到了反常磁场效应。本课题共发表文章35 篇，其中20 篇文章发表在Appl. Phys. Lett和Phys. Rev. B上。通过上述研究，发现了电荷-轨道-自旋有序的转变规律，找到了相应物理过程的控制方式，从而为新型功能材料的设计打下基础。

中文主题词： 电荷-轨道-自旋序，钙钛矿结构，应变，薄膜
结论摘要：

英文主题词spin-orbital-charge order, perovskite structure, strain, thin film

成果综合统计
成果类型
数量
  • 期刊论文
  • 会议论文
  • 专利
  • 获奖
  • 著作
  • 37
  • 0
  • 0
  • 0
  • 0
期刊论文
Interfacial potential in La1-xCaxMnO3/SrTiO3 : Nb junctions with different Ca contents
Manipulating metal-to-insulator transition temperature in manganite-titanate junction by reverse ele
Resistance dependence of photovoltaic effect in Au/SrTiO3:Nb(0.5 wt %) Schottky junctions
Photoresponse of the Schottky junction Au/SrTiO3 : Nb in different resistive states
Magnetic, thermal and transport properties of phase-separated La0.27Nd0.4Ca0.33MnO3
Strain-controlled anisotropic electronic transport in Bi0.4Ca0.6MnO3 films
Effect of anisotropic strain on the charge ordering transition in manganite films
Pressure effects on the charge ordering in Bi0.4Ca0.6MnO3 films of different orientation
Charge ordering transition near the interface of the (011)-oriented La1-xSrxMnO3 (x similar to 1/8)
Bias-dependent rectifying properties of n-n manganite heterojunctions La1-xCaxMnO3/SrTiO3:Nb (x=0.65
Buffer layer-induced unusual rectifying behavior in La0.67Ca0.33MnO3/LaMnO3/SrTiO3:Nb junctions
Effects of film thickness on manganite film-based heterjunctions
Bipolar Resistance Switching in Fully Transparent ZnO:Mg-Based Devices
Magnetic and conductive dead layer at the La0.67Ca0.33MnO3-SrTiO3:Nb interface
Large anisotropy in colossal magnetoresistance of charge orbital ordered epitaxial Sm0.5Ca0.5MnO3 fi
Unusual transport behavior of the SrTiO3-based homojunctions
Crossover of angular dependent magnetoresistance with the metal-insulator transition in colossal mag
Large room-temperature magnetoresistance in ultra-thin La0.67Sr0.33MnO3/Nb : SrTiO3 junction
Photovoltaic effect in the La0.67Ca0.33MnO3/LaMnO3/SrTiO3:Nb heterojunctions with variant LaMnO3 lay
Electronic transport and colossal electroresistance in SrTiO3:Nb-based Schottky junctions
Electric field-induced resistance switching in (Bi2O3)(0.7)(Y2O3)(0.3) films
Magnetic, electronic, and thermal transport properties of Eu0.55Sr0.45MnO3
Electronic transport of the manganite-based heterojunction with high carrier concentrations
Rectifying properties of magnetite-based Schottky diode and the effects of magnetic field
Determination of the entropy changes in the compounds with a first-order magnetic transition
Magnetically and electrically tunable transport property of the heterojunction composed of La0.9Ca0.
A universal relation between resistivity and magnetization in paramagnetic state of manganites
Electronic transport and magnetoresistance in ultrathin manganite-titanate junctions
Electronic transport properties of charge-ordered Bi0.4Ca0.6MnO3 film
A comparison study of the entropy changes in materials with and without short-range magnetic order
Rectifying behaviours of heterojunctions composed of manganites with different resistive properties
Current-processing-induced anisotropic conduction in manganite films
Magnetic field effects on the manganite junction with different electronic processes
Phase separation in Eu0.58Sr0.42MnO3 under pressure
Rotation of ferromagnetic clusters induced magnetoresistance in the junction composed of La0.9Ca0.1MnO3＋δ and 1 wt.% Nb-doped SrTiO3
Effect of thermal-annealing on the magnetoresistance of manganite-based junctions
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