New Approaches to Strain Engineering and Superconductivity

应变工程和超导的新方法

基本信息

  • 批准号:
    2214230
  • 负责人:
  • 金额:
    $ 49.75万
  • 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 2026-04-30
  • 项目状态:
    未结题

项目摘要

Non-technical Abstract:Superconductivity is among the most important materials properties for both fundamental research and practical applications, and the development of novel experimental approaches to superconductivity is of great interest. Building on recent break-through results, this work focuses on using innovative experimental methods to expand the boundaries of understanding superconductivity. Two main approaches are being pursued: the combination of tuning and engineering the properties using stress applied along multiple directions, and investigation of the effects of stress leading to permanent deformation of the material. Both approaches have great untapped potential and are virtually unexplored. The work provides the exciting and timely opportunity to investigate the influence of defects related to deformation on both superconducting and normal-state properties in certain quantum materials. Furthermore, the team is testing a recent prediction of stress-induced metallization and superconductivity in semiconductors. This research provides rich educational and research opportunities for a number of undergraduate and graduate students who are gaining valuable experiences in crystal growth and characterization, transport and thermodynamic measurements, neutron and synchrotron x-ray scattering at US national laboratories, and in the use of innovative strain cells and measurement techniques.Technical Abstract:Building on the recent success with novel high-force pneumatic strain cells to significantly modify and enhance desirable properties of bulk oxides, this project begins to explore a vast parameter space in materials physics, with focus on the superconducting properties of select non-oxide materials that are either plastically deformed or subjected to multiaxis stress. Two main approaches are being pursued: the combination of stress along multiple spatial directions, including shear stress; and the effects of stress that exceeds the elastic limit and leads to permanent, plastic deformation of the material. The research involves crystal growth and characterization, transport and thermodynamic measurements, neutron and synchrotron x-ray scattering, and collaboration with experts in complementary spectroscopic probes. It focuses on three select materials families: telluride superconductors, including SnTe and PbTe; superconducting half-Heusler compounds, most importantly YPtBi; and conventional semiconductors, such as Si and Ge. Broadly, the first two groups involve Dirac and topological semimetals and, moreover, tellurides are of technological relevance due to their outstanding thermoelectric properties. In conventional semiconductors, the team is testing a recent prediction of shear-induced metallization and superconductivity. The novel approaches applied to these materials can be expected to transcend the field of superconductivity and become invaluable to future studies of quantum materials.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.
非技术摘要:超导性是基础研究和实际应用中最重要的材料特性之一,开发新的超导性实验方法具有重要意义。基于最近的突破性成果,这项工作的重点是使用创新的实验方法来扩大理解超导性的边界。两种主要的方法正在进行:使用沿沿着多个方向施加的应力来调整和设计性能的组合,以及对导致材料永久变形的应力的影响的研究。这两种方法都有很大的未开发潜力,实际上尚未探索。这项工作提供了令人兴奋和及时的机会,以研究与形变有关的缺陷对某些量子材料的超导和正常状态特性的影响。此外,该团队正在测试最近对半导体中应力诱导金属化和超导性的预测。这项研究为许多本科生和研究生提供了丰富的教育和研究机会,他们在美国国家实验室获得了晶体生长和表征、传输和热力学测量、中子和同步加速器X射线散射以及使用创新应变池和测量技术的宝贵经验。技术摘要:基于最近成功地使用新型高力气动应变单元来显著地改变和增强块状氧化物的期望性质,该项目开始探索材料物理学中广阔的参数空间,重点是选择塑性变形或受到多轴应力的非氧化物材料的超导特性。目前正在研究两种主要方法:沿沿着多个空间方向的应力组合,包括剪切应力;以及超过弹性极限并导致材料永久塑性变形的应力的影响。该研究涉及晶体生长和表征,运输和热力学测量,中子和同步加速器X射线散射,以及与互补光谱探针专家的合作。它侧重于三个选定的材料家族:碲化物超导体,包括SnTe和PbTe;超导半Heusler化合物,最重要的是YPtBi;和传统的半导体,如Si和Ge。广义上,前两组涉及狄拉克和拓扑半金属,此外,碲化物由于其出色的热电性能而具有技术相关性。在传统半导体中,该团队正在测试最近对剪切诱导金属化和超导性的预测。应用于这些材料的新方法有望超越超导领域,并成为未来量子材料研究的宝贵财富。该奖项反映了NSF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

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Martin Greven其他文献

Reduction annealing effects on charge and spin excitations in Nd2-xCexCuO4
还原退火对 Nd2-xCexCuO4 中电荷和自旋激发的影响
  • DOI:
  • 发表时间:
    2018
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Kenji Ishii;Shun Asano;Masaki Fujita;Masumi Ashida;Jun-ichiro Mizuki;Biqiong Yu;Martin Greven;Jun Okamoto;Amol Singh;Di-Jing Huang
  • 通讯作者:
    Di-Jing Huang
冷却スピノル・ボース原子気体におけるKosterlitz-Thouless転移2
冷却旋量玻色原子气体中的 Kosterlitz-Thouless 转变 2
  • DOI:
  • 发表时间:
    2020
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Biqiong Yu;Kenji Ishii;Shun Asano;Masaki Fujita;Diego Casa;Guichuan Yu;Martin Greven;小林未知数
  • 通讯作者:
    小林未知数
High temperature RIXS study of charge transfer excitations in cuprates
铜酸盐中电荷转移激发的高温 RIXS 研究
  • DOI:
  • 发表时间:
    2019
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Biqiong Yu;Kenji Ishii;Shun Asano;Masaki Fujita;Diego Casa;Guichuan Yu;Martin Greven
  • 通讯作者:
    Martin Greven

Martin Greven的其他文献

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{{ truncateString('Martin Greven', 18)}}的其他基金

Neutron and X-Ray Scattering of Complex Oxides
复合氧化物的中子和 X 射线散射
  • 批准号:
    1036261
  • 财政年份:
    2010
  • 资助金额:
    $ 49.75万
  • 项目类别:
    Continuing Grant
Crystal Growth and Neutron Scattering Studies of Complex Oxides
复合氧化物的晶体生长和中子散射研究
  • 批准号:
    1006617
  • 财政年份:
    2010
  • 资助金额:
    $ 49.75万
  • 项目类别:
    Continuing Grant
Neutron and X-Ray Scattering of Complex Oxides
复合氧化物的中子和 X 射线散射
  • 批准号:
    0705086
  • 财政年份:
    2007
  • 资助金额:
    $ 49.75万
  • 项目类别:
    Continuing Grant
Neutron and X-Ray Scattering Study of Complex Oxides
复合氧化物的中子和 X 射线散射研究
  • 批准号:
    0405655
  • 财政年份:
    2004
  • 资助金额:
    $ 49.75万
  • 项目类别:
    Continuing Grant
CAREER: Crystal Growth and Scattering Studies of Transition Metal Oxides
职业:过渡金属氧化物的晶体生长和散射研究
  • 批准号:
    9985067
  • 财政年份:
    2000
  • 资助金额:
    $ 49.75万
  • 项目类别:
    Continuing Grant
Acquisition of a High-Magnetic-Field/Low-Temperature Facility for Materials Research with Synchrotron X-Rays
购置高磁场/低温设备,用于同步加速器 X 射线材料研究
  • 批准号:
    9802737
  • 财政年份:
    1998
  • 资助金额:
    $ 49.75万
  • 项目类别:
    Continuing Grant

相似国自然基金

Lagrangian origin of geometric approaches to scattering amplitudes
  • 批准号:
    24ZR1450600
  • 批准年份:
    2024
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    0.0 万元
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