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A brief review of ferroelectric control of magnetoresistance in organic spin valves

Journal of Materiomics 2018年第1期4卷 1-12页

作者： Xiaoshan Xu Department of Physics and Astronomy Nebraska Center for Materials and NanoscienceUniversity of NebraskaLincolnNE 68588USA

Magnetoelectric coupling has been a trending research topic in both organic and inorganic materials and *** concept of controlling magnetism using an electric field is particularly appealing in energy efficient *** this spirit,ferroelectricity has been introduced to organic spin valves to manipulate the magneto transport,where the spin transport through the ferromagnet/organic spacer interfaces(spinterface)are under intensive *** ferroelectric materials in the organic spin valves provide a knob to vary the interfacial energy alignment and the interfacial crystal structures,both are critical for the spin *** this review,we introduce the recent efforts of controlling magnetoresistance of organic spin valves using ferroelectricity,where the ferroelectric material is either inserted as an interfacial layer or used as a spacer *** realization of the ferroelectric control of magneto transport in organic spin valve,advances our understanding in the spin transport through the ferromagnet/organic interface,and suggests more functionality of organic spintronic devices.

关键词： organic spin valve Ferroelectricity spinterface Magnetoresistance

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Two-Dimensional Conductive Metal-organic Framework Reinforced spinterface in organic spin valves

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CCS Chemistry 2024年第1期6卷 208-217页

作者： Xiaoyu Song Chao Jin Hongliang Chen Shuaishuai Ding Zhongyi Liu Yang Li Xiaoli Yan Wenbo Mi Long Chen Wenping Hu Department of Chemistry Tianjin Key Laboratory of Molecular Optoelectronic ScienceTianjin UniversityTianjin 300072 School of Chemistry and Chemical Engineering Yantai UniverisityYantaiShandong 264005 Tianjin Key Laboratory of Low Dimensional Materials Physics and Processing Technology School of ScienceTianjin UniversityTianjin 300072 State Key Laboratory of Supramolecular Structure and Materials College of ChemistryJilin UniversityChangchunJilin 130012

Interface engineering in device fabrication is a significant but complicated *** great successes have been achieved by conventional physical in situ or ex situ methods,it still suffers from complicated *** this work,we present a facile method for fabricating phthalocyanine(Pc)-based two-dimensional conductive metal–organic framework(MOF)*** on PcM-Cu(M=Ni,Cu,H_(2))MOF films,spin valves with a vertical configuration of La_(0.67)Sr_(0.33)MnO_(3)/PcM-Cu MOFs/Co were constructed successfully,and exhibited notably high negative magnetoresistance(MR)up to -22% at 50 *** penetrated Co atoms coordinated with the dehydrogenated hydroxy groups in the MOFs resulting in an antiferromagnetic layer of the PcM-Cu-Co hybrid ***,a significant exchange bias effect was demonstrated at the PcM-Cu MOF/Co interface,beneficial for the MR ***,our present study provides new insights into developing high-performance organic spin valves via de novo molecular design.

关键词： two-dimensional conductive metal-organic framework two-dimensional polymer phthalocyanine spintronics organic spin valve

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spin injection and transport in single-crystalline organic spin valves based on TIPS-pentacene

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Science China Materials 2021年第11期64卷 2795-2804页

作者： Ying Wang Jiarong Yao Shuaishuai Ding Siyu Guo Dapeng Cui Xinyue Wang Shuyuan Yang Lijuan Zhang Xinzi Tian Di Wu Chao Jin Rongjin Li Wenping Hu Tianjin Key Laboratory of Molecular Optoelectronic Sciences Department of ChemistrySchool of ScienceTianjin University and Collaborative Innovation Center of Chemical Science and EngineeringTianjin 300072China National Laboratory of Solid State Microstructures Department of Materials Science and Engineering and Jiangsu Key Laboratory for Artificial Functional MaterialsNanjing UniversityNanjing 210093China Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology Department of PhysicsSchool of ScienceTianjin UniversityTianjin 300072China Joint School of National University of Singapore and Tianjin University International Campus of Tianjin UniversityBinhai New CityFuzhou 350207China

Single crystals of organic semiconductors with perfect crystal structure and minimal density of defects can exhibit high mobility and low spin scattering compared with their amorphous or polycrystalline ***,these materials are promising candidates as the spin transport media to obtain long spin relaxation times and spin diffusion lengths in spintronic ***,the investigation of spin injection and transport properties in organic single crystals is hindered by the inability to construct devices such as single-crystalline organic spin valves(OSVs).Herein,thin and large organic single crystals of 6,13-bis(triisopropylsilylethynyl)pentacene(TIPS-pentacene)were grown on a liquid substrate and transferred to a target substrate carrying ferromagnetic electrodes to construct single-crystalline *** magnetoresistance(MR)responses of the single crystals were investigated to study their spin injection and transport *** value as high as 17%was probed with an intermediate layer thickness of 269 *** importantly,spin transport was still observed in a single crystal of a thickness up to 457 nm,which was much larger than that of polycrystalline thin *** research provides a general methodology for constructing single-crystalline OSVs and paves the way to probe the intrinsic spin transport properties of organic semiconductors based on single crystals.

关键词： organic single crystal organic semiconductor magnetoresistance organic spin valve spintronics

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TIPS-pentacene单晶有机自旋阀的自旋注入与传输特性研究（英文）

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Science China Materials 2021年

作者：王颖姚佳荣丁帅帅郭思宇崔大鹏王新月杨书院张利娟田馨孜吴镝金朝李荣金胡文平 TianjinKeyLaboratoryofMolecularOptoelectronicSciences DepartmentofChemistrySchoolofScienceTianjinUniversityandCollaborativeInnovationCenterofChemicalScienceandEngineering NationalLaboratoryofSolidStateMicrostructures DepartmentofMaterialsScienceandEngineeringandJiangsuKeyLaboratoryforArtificialFunctionalMaterialsNanjingUniversity TianjinKeyLaboratoryofLowDimensionalMaterialsPhysicsandPreparingTechnology DepartmentofPhysicsSchoolofScienceTianjinUniversity JointSchoolofNationalUniversityofSingaporeandTianjinUniversity InternationalCampusofTianjinUniversityBinhaiNewCity

与非晶或多晶相比,有机半导体单晶具有完美的晶体结构和较少的结构缺陷,因而具有高迁移率和低自旋散射,使其有望在自旋电子器件中获得长自旋弛豫时间和长自旋扩散长度.然而,目前缺乏构筑单晶有机自旋阀(OSVs)的方法,阻碍了单晶有机半导... 详细信息

与非晶或多晶相比,有机半导体单晶具有完美的晶体结构和较少的结构缺陷,因而具有高迁移率和低自旋散射,使其有望在自旋电子器件中获得长自旋弛豫时间和长自旋扩散长度.然而,目前缺乏构筑单晶有机自旋阀(OSVs)的方法,阻碍了单晶有机半导体的自旋注入和输运特性的研究.针对这一挑战,本文提出了在液态衬底表面生长大面积薄层有机单晶,并转移至带有磁性电极的衬底以构筑有机单晶自旋阀的策略.我们成功探测到了TIPS-pentacene有机单晶在不同温度和不同厚度下的磁电阻响应,获得了高达17%的磁阻.更重要的是,在厚达457 nm的单晶中仍然可以观察到自旋输运,比多晶薄膜的自旋输运长度大得多.据我们所知,本研究是第一例工作的垂直结构有机单晶自旋阀.本研究为构建单晶OSV提供了一种通用的方法,为基于单晶的有机半导体本征自旋输运特性的研究奠定了基础.

关键词： organic single crystal organic semiconductor magnetoresistance organic spin valve spintronics

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