Metal-insulator transitions and symmetry breaking in spin-orbit Mott materials
自旋轨道莫特材料中的金属-绝缘体跃迁和对称性破缺
基本信息
- 批准号:1505549
- 负责人:
- 金额:$ 45.74万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Continuing Grant
- 财政年份:2016
- 资助国家:美国
- 起止时间:2016-01-01 至 2019-12-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Nontechnical Abstract:The goal of this project is to study the electronic and structural properties of crystalline materials found at a new frontier of condensed matter physics, one where materials possess both an appreciable interaction between electrons in tandem with a strong coupling between their inherent magnetism (spin) and their orbital motion. This unique combination of energy scales is predicted to stabilize fundamentally new states of electronic matter, ranging from new forms of superconductivity to new quantum entangled states with far-term applications potential in quantum computing. Research supported by the project focuses on understanding the materials pathways necessary for realizing these new states and on exploring the interactions responsible for driving the prototypical parent state of these materials - the spin-orbit Mott phase - from an insulator into a metal. Supported activities work to train the next generation of scientists utilizing national neutron and x-ray user facilities as well as work to address the nation's growing deficit in new materials discovery/synthesis by supporting the growth of new crystalline materials. The project provides research experience to undergraduates from underrepresented demographics through summer research internships as well as conducts outreach activities aimed at inspiring precollege students to pursue materials science/physics academic and career pathways. Technical Abstract:The project focuses on experimentally exploring the mechanisms through which new classes of spin-orbit Mott (SOM) materials are driven from their parent insulating states into the metallic regime via carrier/bandwidth tuning. The insulating phases of SOM systems are inherently driven by a delicate interplay between strong spin-orbit coupling, crystal field, and short-range Coulomb interactions. This unique balance of energy scales in SOM compounds is predicted to host nearby exotic ground states ranging from high temperature superconductivity, to novel forms of quantum spin liquids, to correlated topological phases. Models of these new phases place them within close proximity to the parent SOM state. The primary goal of the project is to understand how interactions evolve once this parent state is destabilized and driven into nearby materials phase space - specifically, to resolve the role of electron correlations and the evolution of electronic and structural degrees of freedom as the metallic state is approached. Searching for new states/phase behaviors beyond the melting of the spin-orbit Mott phase is a second, overlapping goal of the supported research. Research activities are comprised of a combined materials synthesis, bulk electron properties characterization, and neutron/x-ray scattering effort aimed at forming a comprehensive picture of interactions in perturbed SOM states in classes of Ruddlesden-Popper, pyrochlore, and geometrically frustrated iridates. Students at the graduate and undergraduate levels will be trained in materials synthesis techniques as well as in the use of neutron and x-ray scattering at national user facilities, helping to build the core of the next generation of the national user community.
非技术摘要:该项目的目的是研究在新的冷凝物理物理学领域发现的晶体材料的电子和结构特性,其中材料串联电子之间具有明显的相互作用,并在其固有磁磁性(自旋)及其轨道运动之间具有很强的耦合。 预测能量量表的独特组合将稳定从根本上稳定电子物质的新状态,范围从新的超导性形式到具有量子计算潜力远的新量子纠结状态。 该项目支持的研究重点是理解实现这些新状态所需的材料途径,并探索负责推动这些材料的原型母体状态的相互作用 - 旋转轨道莫特阶段 - 从绝缘子到金属。 支持的活动致力于培训利用国家中子和X射线用户设施的下一代科学家,并通过支持新的结晶材料的增长来解决该国日益增长的新材料发现/综合赤字。 该项目提供了研究经验,可以通过夏季研究实习,从代表性不足的人口统计学以及旨在激发预科学生攻读材料科学/物理学学术和职业途径的外展活动。技术摘要:该项目的重点是实验探索新类型的旋转轨道莫特(SOM)材料的机制,这些机制是通过载体/带宽调整从其父母绝缘状态驱动到金属状态的。 SOM系统的绝缘阶段固有地是由强旋轨耦合,晶体场和短距离库仑相互作用之间的微妙相互作用驱动的。预计SOM化合物中能量尺度的独特平衡将占据附近的外来基态,从高温超导性到新型的量子自旋液体形式到相关的拓扑相。这些新阶段的模型使它们与母公司SOM状态非常接近。 该项目的主要目的是了解一旦该母体状态不稳定并驱动到附近的材料相空间(特别是),以解决电子相关性的作用以及随着金属状态接近电子和结构的自由度的演变。 在旋转轨道阶段的融化之外,寻找新的状态/阶段行为是支持研究的第二个重叠目标。研究活动包括组合材料合成,批量电子性能以及中子/X射线散射工作,旨在在Ruddlesdensen-Popper,Pyrochlore和Gemetrentialistial Advential Distertialistible Distertialistialistial Advential Some中综合图景。 毕业生和本科级别的学生将接受材料合成技术的培训,以及在国家用户设施中使用中子和X射线散射,有助于建立下一代国家用户社区的核心。
项目成果
期刊论文数量(0)
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科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Stephen Wilson其他文献
Sedation for the Pediatric Patient
儿科患者的镇静剂
- DOI:
10.1002/9781118852446.ch10 - 发表时间:
2014 - 期刊:
- 影响因子:0
- 作者:
Stephen Wilson - 通讯作者:
Stephen Wilson
The fundamentals of electron density, density matrix and density functional theory in atoms, molecules and the solid state
原子、分子和固态中的电子密度、密度矩阵和密度泛函理论基础
- DOI:
10.1007/978-94-017-0409-0 - 发表时间:
2003 - 期刊:
- 影响因子:3.7
- 作者:
N. Gidopoulos;Stephen Wilson - 通讯作者:
Stephen Wilson
Could focusing on barriers to industrial energy efficiency create a new barrier to energy efficiency?
关注工业能源效率障碍是否会造成新的能源效率障碍?
- DOI:
- 发表时间:
2021 - 期刊:
- 影响因子:0
- 作者:
Kelly M. Smith;Stephen Wilson;Maureen Hassall - 通讯作者:
Maureen Hassall
The role of serious games in the iManageCancer project
严肃游戏在 iManageCancer 项目中的作用
- DOI:
- 发表时间:
2018 - 期刊:
- 影响因子:1.8
- 作者:
S. Hoffmann;Stephen Wilson - 通讯作者:
Stephen Wilson
Infantile refsum disease with enamel defects: a case report.
伴有牙釉质缺陷的婴儿反胃病:病例报告。
- DOI:
- 发表时间:
2011 - 期刊:
- 影响因子:1.6
- 作者:
D. Tran;W. Greenhill;Stephen Wilson - 通讯作者:
Stephen Wilson
Stephen Wilson的其他文献
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{{ truncateString('Stephen Wilson', 18)}}的其他基金
Resolving the basis of phenotypically variable hereditary abnormalities of eye formation
解决眼睛形成的表型变异遗传异常的基础
- 批准号:
MR/T020164/1 - 财政年份:2020
- 资助金额:
$ 45.74万 - 项目类别:
Research Grant
Unconventional metals in carrier-tuned spin-orbit Mott materials
载流子调谐自旋轨道莫特材料中的非常规金属
- 批准号:
1905801 - 财政年份:2019
- 资助金额:
$ 45.74万 - 项目类别:
Standard Grant
A new aquarium for the UCL Fish Facility
伦敦大学学院鱼类设施的新水族馆
- 批准号:
BB/R013705/1 - 财政年份:2018
- 资助金额:
$ 45.74万 - 项目类别:
Research Grant
DMREF: Collaborative Research: Structure Genome of Metal-Insulator Transitions
DMREF:合作研究:金属-绝缘体转变的结构基因组
- 批准号:
1729489 - 财政年份:2017
- 资助金额:
$ 45.74万 - 项目类别:
Standard Grant
CAREER: Experimental Neutron Scattering and Materials-Based Exploration of Spin-Orbital Physics in Intermediate-Bandwidth Quantum Materials
职业:中子散射实验和中带宽量子材料中自旋轨道物理的基于材料的探索
- 批准号:
1521208 - 财政年份:2015
- 资助金额:
$ 45.74万 - 项目类别:
Continuing Grant
Morphogenesis and growth of the eye in health and disease
健康和疾病中眼睛的形态发生和生长
- 批准号:
MR/L003775/1 - 财政年份:2014
- 资助金额:
$ 45.74万 - 项目类别:
Research Grant
MRI: Acquisition of SQUID Magnetometer for the Exploration of the Next Generation of Materials and the Study of Complex Spin Phenomena
MRI:获取 SQUID 磁力计用于探索下一代材料和研究复杂自旋现象
- 批准号:
1337567 - 财政年份:2013
- 资助金额:
$ 45.74万 - 项目类别:
Standard Grant
Anisotropic Liquid Dielectrophoresis and Interfacial Forces
各向异性液体介电泳和界面力
- 批准号:
EP/J009873/1 - 财政年份:2012
- 资助金额:
$ 45.74万 - 项目类别:
Research Grant
CAREER: Experimental Neutron Scattering and Materials-Based Exploration of Spin-Orbital Physics in Intermediate-Bandwidth Quantum Materials
职业:中子散射实验和中带宽量子材料中自旋轨道物理的基于材料的探索
- 批准号:
1056625 - 财政年份:2011
- 资助金额:
$ 45.74万 - 项目类别:
Continuing Grant
CIF: Small: Efficient Satellite Relaying
CIF:小型:高效卫星中继
- 批准号:
1116997 - 财政年份:2011
- 资助金额:
$ 45.74万 - 项目类别:
Standard Grant
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