RII Track-4:NSF: Resistively-Detected Electron Spin Resonance in Multilayer Graphene
RII Track-4:NSF:多层石墨烯中电阻检测的电子自旋共振
基本信息
- 批准号:2327206
- 负责人:
- 金额:$ 30万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2024
- 资助国家:美国
- 起止时间:2024-01-01 至 2025-12-31
- 项目状态:未结题
- 来源:
- 关键词:
项目摘要
This Research Infrastructure Improvement Track-4 EPSCoR Research Fellows project will provide a fellowship to an Assistant Professor and training for a postdoctoral fellow at Brown University. Spin is an intrinsic property of electrons, which is key to understanding electronic properties of quantum materials at low temperatures. For instance, magnetism occurs when spins of many electrons align in a preferred direction, whereas the nature of superconductivity is crucially dependent on the spin configuration of the underlying electron pairs. In atomically thin materials consisting of two to three layers of carbon atoms, the reduced dimension enhances Coulomb correlation (describes the correlation between the spatial position of electrons due to their Coulomb repulsion), which further amplifies the role of electronic spin. This project aims to develop an experimental method to directly probe the configuration of electron spins in these 2D materials. The proposed effort takes advantage of the state-of-the-art user facility at the National High Magnetic Field Lab. By exposing students and researchers to cutting-edge research in the national lab, the research and outreach program inspires and educates future scientists and engineers to take on leadership roles and pioneer innovations in the field of quantum science and quantum material research. The research project also aims to establish a user program located in Rhode Island, which promises to have wide wide-ranging impact on training Rhode Island’s quantum-deficient workforce by providing research and intern positions for different levels of students.The low-temperature phase diagram of strongly correlated 2D materials hosts many exotic quantum phases, such as superconductivity and ferromagnetism. To understand the microscopic origin underlying these emergent phenomena, it is key to first identify the exact configuration of electronic spin. However, the lack of viable experimental methods presents a hurdle to uncovering the order in the spin degrees of freedom, which gives rise to one of the main challenges for research efforts aiming to better understand the nature of electronic states in 2D materials such as multilayer graphene. In this proposal, the PI puts forth a new paradigm of experimental methods that are capable of directly probing the nature of electronic spin, which utilizes resistively detected electron spin resonance measurement. Moreover, The PI will investigate the Coulomb-driven process of spontaneous rotational symmetry breaking. Recent experimental progress demonstrated that spontaneous rotational symmetry breaking can be characterized based on angle-resolved nonreciprocal transport measurement. Building on these developments, the proposed research project will investigate the electronic spin configuration in multilayer graphene, such as Bernal stacked bilayer graphene and magic-angle twisted trilayer graphene, along with its connection to the process of spontaneous rotational symmetry breaking. Results from this project will have a far-reaching impact by providing new insights into the nature of electronic orders stabilized by the interplay between strong correlation and nontrivial topology. The proposed project will utilize the state-of-the-art user facility at the National High Magnetic Field Lab (NHMFL), where capable staff scientists provide strong technical support.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.
这一研究基础设施改善轨道4 EPSCoR研究员项目将为布朗大学的一名助理教授提供奖学金,并为一名博士后研究员提供培训。自旋是电子的一种本征性质,它是理解量子材料低温电子性质的关键。例如,当许多电子的自旋以优先的方向排列时,磁性就会发生,而超导的性质则关键地取决于底层电子对的自旋配置。在由两到三层碳原子组成的原子薄材料中,降维增强了库仑关联(描述了电子由于库仑排斥而产生的空间位置之间的关联),这进一步放大了电子自旋的作用。该项目旨在开发一种实验方法来直接探测这些2D材料中的电子自旋构型。这项拟议的工作利用了国家高磁场实验室最先进的用户设施。通过让学生和研究人员接触国家实验室的尖端研究,该研究和推广计划激励和教育未来的科学家和工程师在量子科学和量子材料研究领域发挥领导作用和开拓创新。该研究项目还旨在罗德岛州建立一个用户项目,该项目承诺通过为不同水平的学生提供研究和实习生职位,对培训罗德岛州缺乏量子的劳动力产生广泛的影响。强关联2D材料的低温相图包含许多奇异的量子相,如超导和铁磁性。要了解这些新出现的现象背后的微观起源,关键是首先确定电子自旋的准确组态。然而,缺乏可行的实验方法为揭示自旋自由度中的有序提供了障碍,这给旨在更好地了解二维材料(如多层石墨烯)中电子态的性质的研究工作带来了主要挑战之一。在这个提议中,PI提出了一种新的实验方法范例,能够直接探测电子自旋的性质,这利用了可检测到的电子自旋共振测量。此外,PI还将研究库仑驱动的自发转动对称破缺过程。最近的实验进展表明,基于角分辨非互易输运测量的自发转动对称性破缺可以被表征。在这些进展的基础上,拟议的研究项目将研究多层石墨烯中的电子自旋组态,如Beral堆叠的双层石墨烯和魔角扭曲的三层石墨烯,以及它与自发转动对称破缺过程的联系。该项目的结果将对由强相关性和非平凡拓扑之间的相互作用稳定的电子订单的性质提供新的见解,从而产生深远的影响。拟议的项目将利用国家高磁场实验室(NHMFL)最先进的用户设施,在那里有能力的科学家提供强大的技术支持。该奖项反映了NSF的法定使命,并通过使用基金会的智力优势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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Jia Li其他文献
Reconstruction of Intrinsic Thermal Parameters of Methane Hydrate and Thermal Contact Resistance by Freestanding 3
ω
Method
采用独立式 3 ω 法重建甲烷水合物的本征热参数和接触热阻
- DOI:
- 发表时间:
2018 - 期刊:
- 影响因子:3.5
- 作者:
Jia Li;Zhao;G. Yao - 通讯作者:
G. Yao
Improving catalytic efficiency via tailoring macroscopic elasticity of nanoporous materials
通过调整纳米多孔材料的宏观弹性来提高催化效率
- DOI:
10.1007/s10853-022-07147-2 - 发表时间:
2022-04 - 期刊:
- 影响因子:4.5
- 作者:
Fusheng Tan;Lei Zhao;Bin Liu;Qihong Fang;Jia Li - 通讯作者:
Jia Li
Esaa: An Eeg-Speech Auditory Attention Detection Database
Esaa:脑电图语音听觉注意力检测数据库
- DOI:
- 发表时间:
2022 - 期刊:
- 影响因子:0
- 作者:
Peiwen Li;Enze Su;Jia Li;Siqi Cai;Longhan Xie;Haizhou Li - 通讯作者:
Haizhou Li
University of Southern Denmark Effects of directional hearing aid processing and motivation on EEG responses to continuous noisy speech Neher,
南丹麦大学定向助听器处理和动机对脑电图对连续噪声语音反应的影响Neher,
- DOI:
- 发表时间:
2020 - 期刊:
- 影响因子:0
- 作者:
Peiwen Li;Enze Su;Jia Li;Siqi Cai;Longhan Xie;Haizhou Li - 通讯作者:
Haizhou Li
Uniform Nonparametric Series Inference for Dependent Data with an Application to the Search and Matching Model
相关数据的统一非参数级数推断及其在搜索和匹配模型中的应用
- DOI:
10.2139/ssrn.3198230 - 发表时间:
2018 - 期刊:
- 影响因子:0
- 作者:
Jia Li;Z. Liao - 通讯作者:
Z. Liao
Jia Li的其他文献
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{{ truncateString('Jia Li', 18)}}的其他基金
CAREER: studying superconductivity and ferromagnetism in 2D material heterostructures with flat energy band
职业:研究具有平坦能带的二维材料异质结构中的超导性和铁磁性
- 批准号:
2143384 - 财政年份:2022
- 资助金额:
$ 30万 - 项目类别:
Continuing Grant
CIF: Small: Interpretable Machine Learning based on Deep Neural Networks: A Source Coding Perspective
CIF:小:基于深度神经网络的可解释机器学习:源编码视角
- 批准号:
2205004 - 财政年份:2022
- 资助金额:
$ 30万 - 项目类别:
Standard Grant
Cluster Analysis for High-Dimensional and Multi-Source Data
高维多源数据聚类分析
- 批准号:
2013905 - 财政年份:2020
- 资助金额:
$ 30万 - 项目类别:
Standard Grant
EAGER-DynamicData: Generative Statistical Modeling for Dynamic and Distributed Data
EAGER-DynamicData:动态和分布式数据的生成统计建模
- 批准号:
1462230 - 财政年份:2015
- 资助金额:
$ 30万 - 项目类别:
Standard Grant
Statistical Learning for Image Annotation
图像标注的统计学习
- 批准号:
1521092 - 财政年份:2015
- 资助金额:
$ 30万 - 项目类别:
Standard Grant
Parametric and nonparametric regressions on spot volatility
现货波动率的参数和非参数回归
- 批准号:
1326819 - 财政年份:2013
- 资助金额:
$ 30万 - 项目类别:
Standard Grant
Estimation and Inference Methods for Continuous-Time Models
连续时间模型的估计和推理方法
- 批准号:
1227448 - 财政年份:2012
- 资助金额:
$ 30万 - 项目类别:
Standard Grant
Modeling of Mosquitoes Carrying Transgenes or Genetically Modified Bacteria in Preventing the Transmission of Mosquito-Borne Diseases
携带转基因或转基因细菌的蚊子模型以预防蚊媒疾病的传播
- 批准号:
1118150 - 财政年份:2011
- 资助金额:
$ 30万 - 项目类别:
Standard Grant
The Second International Conference on Mathematical Modeling and Analysis of Populations in Biological Systems; October 2009; Huntsville, Alabama
第二届生物系统群体数学建模与分析国际会议;
- 批准号:
0931213 - 财政年份:2009
- 资助金额:
$ 30万 - 项目类别:
Standard Grant
Essential Roles of Receptor-Like Kinases in Brassinosteroid and Cell-Death Control Signaling Pathways
受体样激酶在油菜素类固醇和细胞死亡控制信号通路中的重要作用
- 批准号:
0849206 - 财政年份:2009
- 资助金额:
$ 30万 - 项目类别:
Standard Grant
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