RUI: Fluctuations and Phase Transitions in Iron Pnictide Superconductors

RUI:铁磷族超导体中的涨落和相变

基本信息

  • 批准号:
    1305637
  • 负责人:
  • 金额:
    $ 18.5万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Standard Grant
  • 财政年份:
    2013
  • 资助国家:
    美国
  • 起止时间:
    2013-05-01 至 2017-04-30
  • 项目状态:
    已结题

项目摘要

****Technical Abstract****This award supports experimental low-temperature physics research at an undergraduate institution. The scaling analysis of voltage vs. current curves has been an invaluable tool in the study of the normal-superconducting phase transition. However, recent work has shown that the conventional application of this tool is too flexible to uniquely determine the critical parameters, and that extrinsic effects can obscure or destroy the phase transition. With these caveats known, we have successfully applied this technique to study the hole-doped cuprate YBa2Cu3O7 and the electron-doped cuprate Pr2-xCexCuO4. This project will use the same technique to examine the phase transition in the new iron pnictide-122 superconductors (SrFe2As2 and BaFe2As2) both in a magnetic field and in zero magnetic field. This work will lead to an understanding of the model that governs the phase transition in this material and the differences and similarities of the phase transition between iron pnictide superconductors and other superconductors. This project will also train undergraduate students in experimental and low-temperature physics in preparation for graduate work or industry careers. In addition, to encourage broader education in science, this project will contribute to an existing outreach program with local public schools and submit video demonstrations to YouTube.****Non-Technical Abstract****This award supports experimental low-temperature physics research at an undergraduate institution. "High-Temperature" superconductors, discovered more than a quarter of a century ago, still hold great promise and great challenges. The promise lies in the hope of eventually making superconductors with much higher transition temperatures, and the challenges lie in the fact that we do not, even 25 years later, fully understand how or why these materials superconduct. Superconductors made from iron and arsenic, discovered in 2008, are the latest in an array of unusual materials to display superconductivity. This individual investigator award supports a project that will study how iron- and arsenic-based materials become superconducting, comparing them to copper-oxygen based superconductors and conventional, single element superconductors, all in the hopes of understanding the underlying mechanism that creates superconductivity in these materials. The proposed studies will add to the knowledge of high-temperature superconductors and help fulfill the promise of attaining higher transition temperatures. This project will also train undergraduate students in state-of-the-art sample growth, characterization, and measurement techniques. This project will also contribute to broader educational goals by fostering science outreach to local schools and promoting the research via online video demonstrations.
*技术摘要*该奖项支持本科院校的实验低温物理研究。电压-电流曲线的标度分析是研究正常-超导相变的宝贵工具。然而,最近的工作表明,这种工具的常规应用过于灵活,无法唯一地确定临界参数,而且外部效应可以掩盖或破坏相变。有了这些注意事项,我们已经成功地应用这一技术研究了空穴掺杂铜酸盐YBa2Cu3O7和电子掺杂铜酸盐Pr2-xCexCuO4。这个项目将使用相同的技术来研究新的铁锡-122超导体(SrFe2As2和BaFe2As2)在磁场和零磁场中的相变。这项工作将有助于理解这种材料的相变模型,以及铁磷酸盐超导体与其他超导体相变的异同。该项目还将培训实验和低温物理方面的本科生,为研究生工作或行业职业生涯做准备。此外,为了鼓励更广泛的科学教育,该项目将促进与当地公立学校的现有外展计划,并将视频演示提交到YouTube。*非技术摘要*该奖项支持本科生机构的实验低温物理研究。四分之一个多世纪前发现的“高温”超导体,仍然有着巨大的希望和巨大的挑战。这种前景在于希望最终制造出转变温度高得多的超导体,而挑战在于,即使在25年后,我们也不能完全理解这些材料是如何或为什么超导的。2008年发现的由铁和砷制成的超导体是一系列表现出超导电性的不寻常材料中的最新一种。这一个人研究人员奖支持一个项目,该项目将研究铁和砷基材料如何成为超导,将它们与铜-氧基超导体和传统的单元素超导体进行比较,所有这些都是为了了解在这些材料中产生超导电性的潜在机制。拟议中的研究将增加对高温超导体的了解,并有助于实现实现更高转变温度的承诺。该项目还将对本科生进行最先进的样品生长、表征和测量技术的培训。该项目还将通过促进对当地学校的科学宣传和通过在线视频演示促进研究,为更广泛的教育目标做出贡献。

项目成果

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Matthew Sullivan其他文献

The Expansion of Science Policy in the United States in Three Cases: rDNA Research, The Human Genome Project, and the National Nanotechnology Initiative
美国科学政策的扩展三个案例:rDNA 研究、人类基因组计划和国家纳米技术计划
  • DOI:
  • 发表时间:
    2018
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Matthew Sullivan
  • 通讯作者:
    Matthew Sullivan
Incidence of opportunistic infections during ibrutinib treatment for B-cell malignancies
B 细胞恶性肿瘤伊布替尼治疗期间机会性感染的发生率
  • DOI:
    10.1038/s41375-019-0481-1
  • 发表时间:
    2019-05-13
  • 期刊:
  • 影响因子:
    13.400
  • 作者:
    Kerry A. Rogers;Luay Mousa;Qiuhong Zhao;Seema A. Bhat;John C. Byrd;Zeinab El Boghdadly;Tomas Guerrero;Lauren B. Levine;Fabienne Lucas;Polina Shindiapina;Audrey M. Sigmund;Matthew Sullivan;Tracy E. Wiczer;Jennifer A. Woyach;Farrukh T. Awan
  • 通讯作者:
    Farrukh T. Awan
Comparison of commercially-available metakaolins and slags in binary and ternary concrete mixtures
  • DOI:
  • 发表时间:
    2018-05
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Matthew Sullivan
  • 通讯作者:
    Matthew Sullivan
Code conversion with the quantum Golay code for a universal transversal gate set
  • DOI:
    10.1103/physreva.109.042416
  • 发表时间:
    2023-07
  • 期刊:
  • 影响因子:
    2.9
  • 作者:
    Matthew Sullivan
  • 通讯作者:
    Matthew Sullivan
An Auditing Tool for Wi-Fi or Wired Ethernet Connections
用于 Wi-Fi 或有线以太网连接的审核工具
  • DOI:
  • 发表时间:
    2013
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Matthew Sullivan
  • 通讯作者:
    Matthew Sullivan

Matthew Sullivan的其他文献

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{{ truncateString('Matthew Sullivan', 18)}}的其他基金

Collaborative Research: Updating iVirus - the CyVerse-powered analytical toolkit for viruses of microbes
协作研究:更新 iVirus - CyVerse 支持的微生物病毒分析工具包
  • 批准号:
    2149505
  • 财政年份:
    2022
  • 资助金额:
    $ 18.5万
  • 项目类别:
    Continuing Grant
RUI: Collaborative Research: Structural and Compositional Modification of Memristive Niobium Oxide Films for Neuromorphic Computing Applications
RUI:合作研究:用于神经形态计算应用的忆阻氧化铌薄膜的结构和成分改性
  • 批准号:
    2103197
  • 财政年份:
    2021
  • 资助金额:
    $ 18.5万
  • 项目类别:
    Standard Grant
Next generation informatics to elucidate viral ecology and ecosystem impacts in nature
下一代信息学阐明自然界中的病毒生态学和生态系统影响
  • 批准号:
    1759874
  • 财政年份:
    2018
  • 资助金额:
    $ 18.5万
  • 项目类别:
    Continuing Grant
Collaborative Research: Inferring Cellular Lysis and Regeneration of Organic Matter by Marine Viruses
合作研究:推断海洋病毒对有机物的细胞裂解和再生
  • 批准号:
    1829640
  • 财政年份:
    2018
  • 资助金额:
    $ 18.5万
  • 项目类别:
    Continuing Grant
Ecology and biogeochemical impacts of DNA and RNA viruses throughout the global oceans
DNA 和 RNA 病毒对全球海洋的生态和生物地球化学影响
  • 批准号:
    1829831
  • 财政年份:
    2018
  • 资助金额:
    $ 18.5万
  • 项目类别:
    Standard Grant
Ecological impacts and drivers of double-stranded DNA viral communities in the global oceans
全球海洋中双链 DNA 病毒群落的生态影响和驱动因素
  • 批准号:
    1536989
  • 财政年份:
    2015
  • 资助金额:
    $ 18.5万
  • 项目类别:
    Standard Grant
Targeted and comparative viral community genomics of the Eastern North Pacific
北太平洋东部地区的目标和比较病毒群落基因组学
  • 批准号:
    0961947
  • 财政年份:
    2010
  • 资助金额:
    $ 18.5万
  • 项目类别:
    Standard Grant
EAGER: Viral tagging: Combining flow cytometry and genomics to explore virus-host interactions
EAGER:病毒标签:结合流式细胞术和基因组学探索病毒与宿主的相互作用
  • 批准号:
    0940390
  • 财政年份:
    2009
  • 资助金额:
    $ 18.5万
  • 项目类别:
    Standard Grant
Collaborative Research: PHANTOME: Phage ANnotation TOols and MEthods
合作研究:PHANTOME:噬菌体注释工具和方法
  • 批准号:
    0850105
  • 财政年份:
    2009
  • 资助金额:
    $ 18.5万
  • 项目类别:
    Continuing Grant
RUI: Critical Dynamics of the Electron-Doped Cuprate Superconductors
RUI:电子掺杂铜酸盐超导体的临界动力学
  • 批准号:
    0706557
  • 财政年份:
    2007
  • 资助金额:
    $ 18.5万
  • 项目类别:
    Standard Grant

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  • 批准号:
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