Determination of the Exact Symmetry of the Pairing State in Sr2RuO4

Sr2RuO4 中配对态精确对称性的测定

基本信息

  • 批准号:
    9974327
  • 负责人:
  • 金额:
    $ 33.08万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Continuing Grant
  • 财政年份:
    1999
  • 资助国家:
    美国
  • 起止时间:
    1999-07-15 至 2003-06-30
  • 项目状态:
    已结题

项目摘要

9974327LiuExperimental evidence for an unconventional (e.g. an odd parity (spin-triplet or p-wave)) pairing state in Sr2RuO4 has been growing. Such a system is the only known layered perovskite superconductor (Tc = 1.3 - 1.5K) that does not contain copper. This GOALI program brings together researchers from Penn State, IBM, JPL, and Kyoto University to carry out definitive experimental work that will address some key issues on this exciting new material. The main thrust is to determine the parity (even or odd) of the pairing state in Sr2RuO4 through phase-sensitive experiments on single-crystal-based structures using a scanning SQUID probe. In/Sr2RuO4 (or Pb/Sr2RuO4) junctions will be studied to further our understanding of Josephson coupling between a conventional s-wave and an unconventional superconductor. Au/Sr2RuO4 (or Ag/Sr2RuO4) metallic contacts will be used to search for novel surface-bound states associated with the Andreev process. Tunneling measurements on superconducting single crystals of Sr2RuO4 which are aimed at the understanding of the mechanism of superconductivity in this material will be continued to determine the energy gap of Sr2RuO4. In carrying out this work, scientists at Penn State, IBM, and JPL will be able to exchange ideas in a collaborative environment and be actively involved in the training of graduate students at all stages. Students in turn will have the opportunity to gain first hand experience working in very different settings including academic, industrial, and NASA research laboratories. This environment will provide them with a broader perspective when planning their future careers.%%%Recently Sr2RuO4, the only known layered perovskite superconductor (Tc = 1.3 - 1.5K) that does not contain copper, has attracted much attention in the superconductivity research community. In particular, experimental evidence for an unconventional, likely odd-parity (spin-triplet or p-wave) pairing state found in Sr2RuO4 has generated much excitement on this new superconducting material. The goals of this GOALI program are to determine the exact symmetry of the superconducting pairing state in Sr2RuO4 through phase sensitive and tunneling experiments and to study the Josephson coupling between an unconventional and a conventional s-wave superconductor. In carrying out these research activities, a productive, long-term partnership between Penn State, IBM, and JPL will be established to train students for our future generation of scientists and engineers. Students in turn will have the opportunity to gain first hand experience working in very different settings including academic, industrial, and NASA research laboratories. Such an environment will provide them with a broader perspective when planning their future careers. This GOALI project is supported jointly by the Division of Materials Research (Condensed Matter Physics Program) and the Directorate for Mathematical and Physical Sciences Office of Multidisciplinary Activities (MPS/OMA).***
关于Sr2RuO4中的非常规(例如,奇宇称(自旋三重态或p波))配对态的实验证据一直在增加。这种系统是已知的唯一不含铜的层状钙钛矿超导体(T_c=1.3-1.5K)。这个GOALI计划汇集了来自宾夕法尼亚州立大学、IBM、喷气推进实验室和京都大学的研究人员,进行最终的实验工作,以解决关于这种令人兴奋的新材料的一些关键问题。主要目的是通过扫描SQUID探头对单晶基结构的相敏实验来确定Sr2RuO4中配对态的宇称(偶或奇)。我们将研究In/Sr2RuO4(或Pb/Sr2RuO4)结,以加深我们对常规S波与非常规超导体之间约瑟夫森耦合的理解。Au/Sr2RuO4(或Ag/Sr2RuO4)金属接触将被用来寻找与Andreev过程相关的新的表面束缚态。对超导单晶Sr2RuO4的隧道测量将继续确定Sr2RuO4的能隙,这些测量旨在了解这种材料的超导机制。在开展这项工作时,宾夕法尼亚州立大学、IBM和喷气推进实验室的科学家将能够在合作环境中交流思想,并在所有阶段积极参与研究生的培训。反过来,学生将有机会获得在非常不同的环境中工作的第一手经验,包括学术、工业和NASA研究实验室。这种环境将为他们规划未来的职业生涯提供更广阔的视角。%最近,唯一已知的不含铜的层状钙钛矿型超导体(T_c=1.3-1.5K)Sr2RuO_4在超导研究界引起了极大的关注。特别是,在Sr2RuO4中发现了一种非传统的、可能是奇宇称(自旋三重态或p波)对状态的实验证据,这引起了对这种新超导材料的极大兴奋。该程序的目的是通过相敏和隧穿实验确定Sr2RuO4中超导对称态的精确对称性,并研究非常规和常规S波超导体之间的约瑟夫森耦合。在开展这些研究活动时,宾夕法尼亚州立大学、IBM和喷气推进实验室将建立一个富有成效的长期合作伙伴关系,为我们的下一代科学家和工程师培养学生。反过来,学生将有机会获得在非常不同的环境中工作的第一手经验,包括学术、工业和NASA研究实验室。这样的环境将为他们在规划未来职业生涯时提供更广阔的视角。该GOALI项目由材料研究部(凝聚态物理计划)和数学和物理科学局多学科活动办公室(MPS/OMA)联合支持。

项目成果

期刊论文数量(0)
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会议论文数量(0)
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Ying Liu其他文献

Low RCS microstrip antenna using polarization-dependent frequency selective surface
使用偏振相关频率选择表面的低 RCS 微带天线
  • DOI:
    10.1109/aps.2014.6905361
  • 发表时间:
    2014-07
  • 期刊:
  • 影响因子:
    1.1
  • 作者:
    Yongtao Jia;Ying Liu;Yuwen Hao;Shuxi Gong
  • 通讯作者:
    Shuxi Gong
spanPhenotypic and genetic evidence for ecological speciation of /spanspan style=line-height:1.5;Aquilegia japonica and A. oxysepala/span
日本耧斗菜和尖萼耧斗菜生态物种形成的表型和遗传证据
  • DOI:
  • 发表时间:
    2014
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Lin-Feng Li;Hua-Ying Wang;Di Pang;Ying Liu;Bao Liu;Hong-Xing Xiao
  • 通讯作者:
    Hong-Xing Xiao
Down regulation of UCP2 expression in RPE cells under oxidative stress
氧化应激下RPE细胞UCP2表达下调
  • DOI:
  • 发表时间:
    2019
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Ying Liu;Yuan Ren;Xia Wang;Xu Liu;Yuan He
  • 通讯作者:
    Yuan He
Effects of B on the segregation of Mo at the Fe-Cr-Ni Sigma 5(210) grain boundary
B对Fe-Cr-Ni Sigma 5(210)晶界Mo偏析的影响
  • DOI:
  • 发表时间:
    2019
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Jianguo Li;Caili Zhang;Xu Li;Zhuxia Zhang;Nan Dong;Ying Liu;Jian Wang;Yanlu Zhang;Lixia Ling;Peide Han
  • 通讯作者:
    Peide Han
An Effective Entropy Model for Semantic Feature Compression
一种有效的语义特征压缩熵模型
  • DOI:
    10.1109/pcs60826.2024.10566424
  • 发表时间:
    2024
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Tianma Shen;Ying Liu
  • 通讯作者:
    Ying Liu

Ying Liu的其他文献

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{{ truncateString('Ying Liu', 18)}}的其他基金

EAGER: Resolving the issue of pairing symmetry in Sr2RuO4
EAGER:解决 Sr2RuO4 中的配对对称性问题
  • 批准号:
    2312899
  • 财政年份:
    2023
  • 资助金额:
    $ 33.08万
  • 项目类别:
    Standard Grant
ERI: Generative Adversarial Networks for Video Coding
ERI:用于视频编码的生成对抗网络
  • 批准号:
    2138635
  • 财政年份:
    2022
  • 资助金额:
    $ 33.08万
  • 项目类别:
    Standard Grant
I-CORPS: Scalable Production of Polymeric Nanoparticles Encapsulating Hydrophobic Compounds
I-CORPS:封装疏水性化合物的聚合物纳米颗粒的可规模化生产
  • 批准号:
    1566113
  • 财政年份:
    2015
  • 资助金额:
    $ 33.08万
  • 项目类别:
    Standard Grant
CAREER: Understanding Nanoprecipitation - Scalable Production of Polymeric Nanoparticles Encapsulating Hydrophobic Compounds
职业:了解纳米沉淀 - 封装疏水性化合物的聚合物纳米颗粒的规模化生产
  • 批准号:
    1350731
  • 财政年份:
    2014
  • 资助金额:
    $ 33.08万
  • 项目类别:
    Standard Grant
Toroidal-spiral particles (TSPs) for co-delivery of multiple compounds of different sizes
用于共同递送多种不同尺寸化合物的环形螺旋颗粒 (TSP)
  • 批准号:
    1404884
  • 财政年份:
    2014
  • 资助金额:
    $ 33.08万
  • 项目类别:
    Standard Grant
EAGER: Preliminary Study on Novel self-assembled Toroidal-Spiral MicroParticles (TSMPs) for sustained release of therapeutic proteins and peptides: theory and experiments
EAGER:用于持续释放治疗性蛋白质和肽的新型自组装环形螺旋微粒(TSMP)的初步研究:理论和实验
  • 批准号:
    1039531
  • 财政年份:
    2010
  • 资助金额:
    $ 33.08万
  • 项目类别:
    Standard Grant
Materials World Network: Novel Physical Phenomena in Unusual Mesoscopic Superconductors
材料世界网络:异常介观超导体中的新物理现象
  • 批准号:
    0908700
  • 财政年份:
    2009
  • 资助金额:
    $ 33.08万
  • 项目类别:
    Standard Grant
US-France Cooperative Research: Search for Edge Currents and Domain Walls in SrRu0
美法合作研究:寻找SrRu0中的边缘电流和畴壁
  • 批准号:
    0340779
  • 财政年份:
    2004
  • 资助金额:
    $ 33.08万
  • 项目类别:
    Standard Grant
Experimental Studies of Nanoscopic Superconductors: Half-flux Quantum, Metallic State of Cooper Pairs, and the Berry's Phase
纳米超导体的实验研究:半通量量子、库珀对金属态和贝里相
  • 批准号:
    0202534
  • 财政年份:
    2002
  • 资助金额:
    $ 33.08万
  • 项目类别:
    Continuing Grant
CAREER: Mesoscopic Physics of Disordered Superconductors: An Arena for Research and Education
职业:无序超导体的介观物理:研究和教育的舞台
  • 批准号:
    9702661
  • 财政年份:
    1997
  • 资助金额:
    $ 33.08万
  • 项目类别:
    Continuing Grant

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