THEORETICAL STUDY IN NANO-PHYSICS OF MAGNETIC ATOM BRIDGES CONTROLLED BY THE STM TIP MANIPULATIONS - NANO-STRUCTURE, NANO-MAGNETISM

STM 尖端操控控制磁原子桥的纳米物理理论研究 - 纳米结构、纳米磁性

基本信息

  • 批准号:
    13650026
  • 负责人:
  • 金额:
    $ 2.24万
  • 依托单位:
  • 依托单位国家:
    日本
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
  • 财政年份:
    2001
  • 资助国家:
    日本
  • 起止时间:
    2001 至 2003
  • 项目状态:
    已结题

项目摘要

We investigated the nano-physics : nano-lattice-structure, nano-magnetism, and quantum transport, of the magnetic atom bridges constructed between a tip of a scanning tunneling microscope (STM) and a solid surface with the aid of first-principles calculation based on the density functional theory.We show the origin of a change in the magnetic state induced by the STM-tip manipulation and how the change in the magnetic state affects the electron transport phenomena by use of the Fe atom bridge of the simple structure, the linear chain structure. As a result of total energy calculation, the Fe atom bridge of the linear chain structure is unstable and its lattice is too weak to show the change in the magnetic state. The stable atom bridge is of the zigzag chain structure, whose magnetic state is always high-spin ferromagnetic stateWe searched the stable structure of the atom bridge whose lattice structure is enough strong to show a change in the magnetic state. We have found such a stable … More structure. That is the twisted ladder structure. The Fe atom bridge with a twisted ladder structure is stable enough to undergo changes in its magnetic state via compression in length. We showed that it is possible to control the magnetic state by the STM-tip manipulations.We have also investigated the magnetic properties of magnetic alloy atom bridges. In the case of an Fe_<1-x>Ni_x alloy atom bridge, we have found that the atoms maintain a considerably large magnetic moment (about 3μB for an Fe atom and about 0.9μB for a Ni atom), and that the mean magnetic moment per atom in the atom bridge decreases linearly as x increases. In the case of an Fe_xV_<1-x> alloy atom bridges shows a strong contrast with that of the Fe_<1-x>Ni_x alloy atom bridges, and similarities with the bulk of the corresponding alloy, except for the case of x=1.0. In the Fe_<1-x>V_x alloy atom bridge, a V atom has no magnetic moment, and an Fe atom has a smaller magnetic moment than that in the bulk Fe crystal. The magnetic moment of the Fe atom in the Fe-V alloy atom bridge is strongly reduced by the Fe-V atom mixing. These results give us the atom bridge version of the Pauling-Slater curve.Furthermore, we have determined the spin transport phenomena trough these atom bridges. We think that such a systematic investigation gives us the important and useful information in order to establish a basis for the design and fabrication of the atom bridge related nano-spin-electronics devices. Less
我们研究了纳米物理学:纳米晶格结构、纳米磁性和量子输运,利用基于密度泛函理论的第一性原理计算方法,研究了扫描隧道显微镜(STM)针尖与固体表面之间的磁性原子桥,揭示了STM针尖与固体表面之间磁性原子桥的形成机制,揭示了STM针尖与固体表面之间磁性原子桥的形成机制。利用Fe原子桥的简单结构,线性链结构,尖端操纵和磁状态的变化如何影响电子输运现象。总能量计算的结果表明,线性链状结构的Fe原子桥是不稳定的,其晶格太弱,不能显示磁性状态的变化。稳定的原子桥为锯齿形链状结构,其磁态始终为高自旋铁磁态。我们寻找了晶格结构足够强的原子桥的稳定结构,以显示磁态的变化。我们找到了这样一个稳定的 ...更多信息 结构这就是扭曲的阶梯结构。具有扭曲梯形结构的Fe原子桥足够稳定,可以通过长度压缩来改变其磁性状态。我们证明了用STM针尖操纵来控制磁性状态是可能的,并研究了磁性合金原子桥的磁性。对于Fe_<1-x>Ni_x合金原子桥,我们发现原子保持着相当大的磁矩(Fe原子约为3μB,Ni原子约为0.9μB),原子桥中每个原子的平均磁矩随x的增加而线性减小。Fe_xV_x<1-x>合金的原子桥与Fe_<1-x>Ni_x合金的原子桥形成强烈的对比,而与相应合金体相的原子桥相似(x=1.0的情况除外)。在Fe_<1-x>V_x合金原子桥中,V原子没有磁矩,Fe原子的磁矩小于体相Fe原子的磁矩。Fe-V合金原子桥中Fe原子的磁矩被Fe-V原子混合强烈地降低。这些结果给出了原子桥形式的Pauling-Slater曲线,并进一步确定了通过这些原子桥的自旋输运现象。我们认为,这样一个系统的研究为我们提供了重要的和有用的信息,为原子桥相关的纳米自旋电子器件的设计和制造奠定了基础。少

项目成果

期刊论文数量(55)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Spin-dependent transport through Fe nanowires on Cu surfaces
通过铜表面上的铁纳米线的自旋相关传输
Absorption Reaction of Hydrogen into Pd(111)
Pd(111)吸收氢的反应
Nonequilibrium Green Functions Depending on the Observation Time for Ultrafast Dynamics
非平衡格林函数取决于超快动力学的观察时间
  • DOI:
  • 发表时间:
    2002
  • 期刊:
  • 影响因子:
    0
  • 作者:
    M.Sakaue;T.Munakata;H.Kasai;A.Okiji
  • 通讯作者:
    A.Okiji
水素吸蔵物及びその製造並びに該吸蔵物からの水素放出方法
储氢材料、其制备方法以及从储氢材料中释放氢气的方法
  • DOI:
  • 发表时间:
    2003
  • 期刊:
  • 影响因子:
    0
  • 作者:
  • 通讯作者:
岸智弥, 中西寛, 笠井秀明, Wilson Agerico Dino, 小森文夫: "Magnetic Properties of Fe Nanowires on Cu(111) 「銅(111)上の鉄ナノワイヤーにおける磁性」"真空. 46・3. 291-293 (2003)
Tomoya Kishi、Hiroshi Nakanishi、Hideaki Kasai、Wilson Agerico Dino、Fumio Komori:“Cu(111) 上的 Fe 纳米线的磁性”46・3 (2003)。
  • DOI:
  • 发表时间:
  • 期刊:
  • 影响因子:
    0
  • 作者:
  • 通讯作者:
{{ item.title }}
{{ item.translation_title }}
  • DOI:
    {{ item.doi }}
  • 发表时间:
    {{ item.publish_year }}
  • 期刊:
  • 影响因子:
    {{ item.factor }}
  • 作者:
    {{ item.authors }}
  • 通讯作者:
    {{ item.author }}

数据更新时间:{{ journalArticles.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ monograph.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ sciAawards.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ conferencePapers.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ patent.updateTime }}

NAKANISHI Hiroshi其他文献

NAKANISHI Hiroshi的其他文献

{{ item.title }}
{{ item.translation_title }}
  • DOI:
    {{ item.doi }}
  • 发表时间:
    {{ item.publish_year }}
  • 期刊:
  • 影响因子:
    {{ item.factor }}
  • 作者:
    {{ item.authors }}
  • 通讯作者:
    {{ item.author }}

{{ truncateString('NAKANISHI Hiroshi', 18)}}的其他基金

How Attentional Direction on Certain Language Aspects during Shadowing Training Influences Japanese EFL Learners' Phonological Processing Skills
影子训练期间某些语言方面的注意力方向如何影响日本英语学习者的语音处理技能
  • 批准号:
    16K02928
  • 财政年份:
    2016
  • 资助金额:
    $ 2.24万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
The Relationship between the Parsing of Prepositional Phrases and Non-syntactical Information: The Perspective of Japanese EFL Learners' Working Memory Capacity
介词短语解析与非句法信息的关系:日本英语学习者工作记忆能力的视角
  • 批准号:
    24720266
  • 财政年份:
    2012
  • 资助金额:
    $ 2.24万
  • 项目类别:
    Grant-in-Aid for Young Scientists (B)
Establishment of a simple but accurate method for genetic diagnosis of Usher syndrome and other hearing disorders by using cDNA synthesized from hair roots
利用发根合成的 cDNA 建立简单而准确的 Usher 综合征和其他听力障碍基因诊断方法
  • 批准号:
    22791589
  • 财政年份:
    2010
  • 资助金额:
    $ 2.24万
  • 项目类别:
    Grant-in-Aid for Young Scientists (B)
Theoretical study on nano-physics of the interfaces between the molecular bridge and the electrode surfaces
分子桥与电极表面界面的纳米物理理论研究
  • 批准号:
    22510107
  • 财政年份:
    2010
  • 资助金额:
    $ 2.24万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
The relation of Working Memory capacity of japanese EFL leamers with the processing of syntactically ambiguous sentences
日本英语学习者的工作记忆能力与句法歧义句处理的关系
  • 批准号:
    22820052
  • 财政年份:
    2010
  • 资助金额:
    $ 2.24万
  • 项目类别:
    Grant-in-Aid for Research Activity Start-up
Mutation analysis among Japanese patients with Usher syndrome for constructing genotype-phenotype correlation
日本 Usher 综合征患者的突变分析以构建基因型-表型相关性
  • 批准号:
    20791189
  • 财政年份:
    2008
  • 资助金额:
    $ 2.24万
  • 项目类别:
    Grant-in-Aid for Young Scientists (B)
Theoretical study in nano-structure-physics of magnetic atom bridges and molecular bridges
磁性原子桥和分子桥纳米结构物理理论研究
  • 批准号:
    16510075
  • 财政年份:
    2004
  • 资助金额:
    $ 2.24万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Regulation of glutamatergic signalings by niacrophage/microglia
噬菌体/小胶质细胞对谷氨酸信号的调节
  • 批准号:
    14571764
  • 财政年份:
    2002
  • 资助金额:
    $ 2.24万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Involvement of cathepsin E in exogenous antigen processing in primary cultured microglia
组织蛋白酶 E 参与原代培养小胶质细胞外源抗原加工
  • 批准号:
    11671845
  • 财政年份:
    1999
  • 资助金额:
    $ 2.24万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
EXPRESSION AND FUNCTION OF CATHEPSIN E IN ACTIVATED MICROGLIA FOLLOWING FACIAL NERVE INJURY
面神经损伤后激活的小胶质细胞中组织蛋白酶 E 的表达和功能
  • 批准号:
    09671898
  • 财政年份:
    1997
  • 资助金额:
    $ 2.24万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)

相似海外基金

Non-noble metal-based nano wire networks as novel support-less catalyst structures in alkaline fuel cells
非贵金属基纳米线网络作为碱性燃料电池中新型无载体催化剂结构
  • 批准号:
    342145578
  • 财政年份:
    2017
  • 资助金额:
    $ 2.24万
  • 项目类别:
    Research Grants
Structural characterization and transport properties of ferromagnetic-semiconducting nano-wire hybrid structures for nano-spintronic device applications
用于纳米自旋电子器件应用的铁磁半导体纳米线混合结构的结构表征和输运特性
  • 批准号:
    367007721
  • 财政年份:
    2017
  • 资助金额:
    $ 2.24万
  • 项目类别:
    Research Grants
Coiled-coil proteins as nano-wire scaffolds for in vitro and in vivo synthetic biology applications
卷曲螺旋蛋白作为纳米线支架用于体外和体内合成生物学应用
  • 批准号:
    1771922
  • 财政年份:
    2016
  • 资助金额:
    $ 2.24万
  • 项目类别:
    Studentship
Characterisation of electron transport in bacterial nano-wire proteins through high performance computing and experimentation
通过高性能计算和实验表征细菌纳米线蛋白中的电子传输
  • 批准号:
    EP/M001946/1
  • 财政年份:
    2015
  • 资助金额:
    $ 2.24万
  • 项目类别:
    Research Grant
Characterisation of electron transport in a bacterial nano-wire protein through high performance computing and experimentation
通过高性能计算和实验表征细菌纳米线蛋白中的电子传输
  • 批准号:
    EP/M001989/1
  • 财政年份:
    2015
  • 资助金额:
    $ 2.24万
  • 项目类别:
    Research Grant
Design Guideline for High-Performance Si Nano-wire Transistor by Optimization of Thermal and Impurity Properties
通过热性能和杂质性能优化的高性能硅纳米线晶体管设计指南
  • 批准号:
    15H03997
  • 财政年份:
    2015
  • 资助金额:
    $ 2.24万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Development of Evaluation Method of Film Delamination Strength, and Improvement by Nano-wire
薄膜剥离强度评价方法的开发及纳米线的改进
  • 批准号:
    26420016
  • 财政年份:
    2014
  • 资助金额:
    $ 2.24万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
On-demand wiring of electro conductive nano wire toward cell interface
导电纳米线按需布线至细胞界面
  • 批准号:
    23656179
  • 财政年份:
    2011
  • 资助金额:
    $ 2.24万
  • 项目类别:
    Grant-in-Aid for Challenging Exploratory Research
GOALI: Gated Tunneling Devices from Nano-wire Core Shell Structures for Low-poer Applications
GOALI:用于低功率应用的纳米线核壳结构的门控隧道器件
  • 批准号:
    0852965
  • 财政年份:
    2009
  • 资助金额:
    $ 2.24万
  • 项目类别:
    Standard Grant
Research on nano wire phase-change memory
纳米线相变存储器的研究
  • 批准号:
    21710135
  • 财政年份:
    2009
  • 资助金额:
    $ 2.24万
  • 项目类别:
    Grant-in-Aid for Young Scientists (B)
{{ showInfoDetail.title }}

作者:{{ showInfoDetail.author }}

知道了