EAGER: Resolving the issue of pairing symmetry in Sr2RuO4
EAGER:解决 Sr2RuO4 中的配对对称性问题
基本信息
- 批准号:2312899
- 负责人:
- 金额:$ 25.32万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2023
- 资助国家:美国
- 起止时间:2023-05-15 至 2025-04-30
- 项目状态:未结题
- 来源:
- 关键词:
项目摘要
Non-technical description:Superconductivity is a macroscopic quantum phenomenon highly relevant to quantum computing and other quantum technologies. The drive towards quantum computing calls for deeper understanding of the fundamental physics of superconductivity. For example, the implementation of fault tolerant topological quantum computing may be achievable with exotic spin-triplet superconductors. Single-layer strontium ruthenate (SRO) had been a leading candidate for a spin-triplet superconductor up to 2019. However, it turned out that one of the experiments that supported that claim in SRO is incorrect. This led to a controversy on the nature of superconductivity in this material. This experimental and theoretical project will aim to address this controversy as well as train future scientists from underrepresented minority communities in STEM to help meet the human resource needs of emerging quantum technologies.Technical description:The symmetry properties of the superconducting order parameter, which consists of orbital and spin parts, are of fundamental interest for superconductivity research. Single-layer strontium ruthenate (SRO) was considered a leading candidate for spin-triplet superconductivity up to 2019 when results from an important NMR Knight shift experiment from 1998, which probes the spin part of the order parameter, was shown to be incorrect. This led to suggestions by some researchers that SRO is actually a spin singlet. On the other hand, the Josephson effect based phase-sensitive experiments on SRO, which have remained largely unchallenged, suggest that the orbital part of the order parameter in SRO is of an odd parity, which implies that SRO is a spin triplet due to the presence of an inversion symmetry in this material. The heated debate on the pairing symmetry in SRO calls for new theoretical insights and additional experimental inputs. This project aims to strengthen the previous determination of the odd parity order parameter in SRO as well as identify ways to reconcile this with work probing the spin degrees of freedom.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.
非技术描述:超导是一种宏观量子现象,与量子计算和其他量子技术高度相关。推动量子计算需要对超导的基本物理有更深的理解。例如,使用奇异的自旋三重态超导体可以实现容错拓扑量子计算。截至2019年,单层钌酸锶(SRO)一直是自旋三重态超导体的主要候选材料。然而,事实证明,在SRO中支持这一说法的一个实验是不正确的。这引起了关于这种材料的超导性质的争论。这个实验和理论项目旨在解决这一争议,并培养来自STEM中代表性不足的少数民族社区的未来科学家,以帮助满足新兴量子技术的人力资源需求。技术描述:超导序参量由轨道和自旋两部分组成,其对称性是超导研究的基础。直到2019年,单层钌酸锶(SRO)一直被认为是自旋三重态超导的主要候选者,但1998年一项重要的NMR奈特位移实验的结果被证明是不正确的,该实验探测了自旋部分的有序参数。这导致一些研究人员提出,SRO实际上是一个自旋单线态。另一方面,基于Josephson效应的SRO相敏实验表明,SRO中序参量的轨道部分具有奇宇称,这意味着SRO是一个自旋三重态,因为这种材料中存在反转对称性。关于SRO中对对称性的激烈争论需要新的理论见解和额外的实验输入。本项目旨在加强SRO中奇宇称序参数的先前确定,并确定将其与探测自旋自由度的工作相协调的方法。该奖项反映了美国国家科学基金会的法定使命,并通过使用基金会的知识价值和更广泛的影响审查标准进行评估,被认为值得支持。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(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
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:
$ 25.32万 - 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:
$ 25.32万 - 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:
$ 25.32万 - 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:
$ 25.32万 - 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:
$ 25.32万 - 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:
$ 25.32万 - 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:
$ 25.32万 - 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:
$ 25.32万 - 项目类别:
Continuing Grant
Determination of the Exact Symmetry of the Pairing State in Sr2RuO4
Sr2RuO4 中配对态精确对称性的测定
- 批准号:
9974327 - 财政年份:1999
- 资助金额:
$ 25.32万 - 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:
$ 25.32万 - 项目类别:
Continuing Grant
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