Separate Evaluation of Electron Coherence Influence Factors in Quantum Device by Resonant Tunneling Structures

谐振隧道结构单独评估量子器件中电子相干性影响因素

基本信息

  • 批准号:
    15560291
  • 负责人:
  • 金额:
    $ 2.05万
  • 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:
    2003
  • 资助国家:
    日本
  • 起止时间:
    2003 至 2004
  • 项目状态:
    已结题

项目摘要

The objective of the research is to clarify a possibility to separately evaluate electron coherence influence factors, that is, phase relaxation, structural inhomogeneity, and temperature, by using IV characteristics of resonant tunneling diode(RTD).We proposed an evaluation method of electron coherence by IV characteristics of RTD. In the method, IV curves are divided into three regions, that is, a)current cut-off region, b)current raising region, and c)current peak region. By fitting experimentally measured IV curve completely, electron phase coherence and structural inhomogeneity can be evaluated from region a)and b)respectively.To confirm effectiveness of present method, we evaluated a InP/InGaAs RTD which was grown by the step flow mode. IV data measured at 4.2K was completely fitted over three orders in current magnitude from region a)to c)by assuming well width fluctuation of 0.6 nm, and we confirmed the effectiveness of our proposed method.Next, we modeled the influence of random distribution of impurities in the emitter and collector electrodes on IV characteristics. Then, we found the condition that the influence on the a)region was quite small. For example, the influence was suppressed with a spacer layer of length 2.6nm when a doping density was 3x10^<17>cm^<-3>.Finally, by using the theoretical method obtained thus far, we succeeded to give a RTD structure where the electron coherence could be evaluated separately.
本研究的目的是阐明利用谐振隧道二极管(RTD)的IV特性来单独评估电子相干性影响因素,即相位弛豫、结构不均匀性和温度的可能性。我们提出了一种电子相干性评估方法通过 RTD 的 IV 特性。该方法将IV曲线分为三个区域,即a)电流截止区域、b)电流上升区域和c)电流峰值区域。通过完全拟合实验测量的 IV 曲线,可以分别从 a) 和 b) 区域评估电子相位相干性和结构不均匀性。为了证实本方法的有效性,我们评估了通过阶跃流模式生长的 InP/InGaAs RTD。通过假设井宽波动为 0.6 nm,在 4.2K 测量的 IV 数据完全拟合了从区域 a) 到 c) 的三个数量级的电流量级,并且我们证实了我们提出的方法的有效性。接下来,我们对随机分布的影响进行了建模发射极和集电极中的杂质对 IV 特性的影响。然后,我们发现对a)区域的影响很小。例如,当掺杂密度为3x10^<17>cm^<-3>时,使用长度为2.6nm的间隔层抑制了影响。最后,通过使用迄今为止获得的理论方法,我们成功地给出了RTD结构其中电子相干性可以单独评估。

项目成果

期刊论文数量(26)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Numerical Foundation of Hot-Electron Diffraction Experiment Based on Ballistic Electron Emission Microscone
基于弹道电子发射微锥的热电子衍射实验的数值基础
K.Furuya et al.: "Young's Double-Slit Interference Experiment of Hot Electron in Semiconductors"Sixth International Conference on New Phenomena in Mesoscopic Systems & Fourth International Conference on Surfaces and Interfaces of Mesoscopic Devices. 1.6.
K.Furuya等人:“半导体中热电子的杨氏双缝干涉实验”第六届介观系统新现象国际会议
  • DOI:
  • 发表时间:
  • 期刊:
  • 影响因子:
    0
  • 作者:
  • 通讯作者:
Numerical Foundation of Hot-Electron Diffraction Experiment
热电子衍射实验的数值基础
  • DOI:
  • 发表时间:
    2004
  • 期刊:
  • 影响因子:
    0
  • 作者:
    N.Machida;H.Kanoh;K.Furuya;土屋 英昭;N.Machida et al.
  • 通讯作者:
    N.Machida et al.
InP Hot Electron Transistors with a Buried Metal Gate
  • DOI:
    10.1143/jjap.42.7221
  • 发表时间:
    2003-12
  • 期刊:
  • 影响因子:
    1.5
  • 作者:
    Y. Miyamoto;R. Yamamoto;H. Maeda;K. Takeuchi;N. Machida;L. Wernersson;K. Furuya
  • 通讯作者:
    Y. Miyamoto;R. Yamamoto;H. Maeda;K. Takeuchi;N. Machida;L. Wernersson;K. Furuya
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MACHIDA Nobuya其他文献

MACHIDA Nobuya的其他文献

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{{ truncateString('MACHIDA Nobuya', 18)}}的其他基金

Development of Sulfur-Lithium Batteries and Their Electrochemical Properties at Room Temperature
硫锂电池的研制及其室温电化学性能
  • 批准号:
    19550198
  • 财政年份:
    2007
  • 资助金额:
    $ 2.05万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Development of All-solid-state Lithium Batteries with Energy Density
高能量密度全固态锂电池的开发
  • 批准号:
    15560591
  • 财政年份:
    2003
  • 资助金额:
    $ 2.05万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)

相似海外基金

Resonant tunneling diode Terahertz oscillator with superlattice heterostructure for high output power
具有超晶格异质结构的谐振隧道二极管太赫兹振荡器,可实现高输出功率
  • 批准号:
    24K17329
  • 财政年份:
    2024
  • 资助金额:
    $ 2.05万
  • 项目类别:
    Grant-in-Aid for Early-Career Scientists
Generation and control of frequency comb in resonant tunneling diode oscillator
谐振隧道二极管振荡器中频率梳的产生与控制
  • 批准号:
    22K04217
  • 财政年份:
    2022
  • 资助金额:
    $ 2.05万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Studies on THz sampling and signal generation technologies based on MEMS/resonant tunneling diode integration
基于MEMS/谐振隧道二极管集成的太赫兹采样与信号产生技术研究
  • 批准号:
    25249042
  • 财政年份:
    2013
  • 资助金额:
    $ 2.05万
  • 项目类别:
    Grant-in-Aid for Scientific Research (A)
Resonant-Tunneling-diode Terahertz Oscillator with Functional Heterostructure for High Performance
具有高性能功能异质结构的谐振隧道二极管太赫兹振荡器
  • 批准号:
    24560398
  • 财政年份:
    2012
  • 资助金额:
    $ 2.05万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Terahertz oscillating resonant tunneling diode having beam shaping function using three-dimensionally integrated antenna structure
采用三维集成天线结构的具有波束整形功能的太赫兹振荡谐振隧道二极管
  • 批准号:
    22760247
  • 财政年份:
    2010
  • 资助金额:
    $ 2.05万
  • 项目类别:
    Grant-in-Aid for Young Scientists (B)
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