Controlling Emergent Orders in Quantum Materials

控制量子材料中的紧急秩序

• 批准号: EP/R031924/1
• 负责人: Peter Wahl
• 金额: $ 128.95万
• 依托单位: University of St Andrews
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2018
• 资助国家: 英国
• 起止时间: 2018 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FR031924%2F1
• 关键词: Controlling; Emergent; Orders; Quantum; Materials

The properties of normal metals and insulators are quite well understood and numerical calculations of the electronic structures provide often astonishing precision, enabling a computational approach to designing materials with a specific property. This level of understanding has been instrumental in the development of semiconductor electronics. Quantum Materials exhibit a vast range of desirable properties, enabling new functionality, however these are usually unexpected and their properties cannot be predicted. Prime examples for the surprising properties of quantum materials are colossal magnetoresistance and high-temperature superconductivity. High temperature superconductivity occurs at temperatures of almost ten times higher than in conventional superconductors (except under pressure), whereas colossal magnetoresistance exhibits a change in resistivity with magnetic field which is orders of magnitude larger than for giant magnetoresistance, for the discovery of which the Nobel prize was awarded in 2007. Reaping the properties of quantum materials for applications has remained elusive, and a lack of understanding of their physics is a major obstacle to achieving this.Reaping the properties of quantum materials for applications has remained elusive. The vast majority of our knowledge about the properties of these materials comes from bulk probes which have provided information about the exotic phases in these materials with exquisite detail. Yet for interfacing to the outside world, it is important to understand the impact of surfaces and interfaces on their emergent properties. The impact of these will provide new opportunities to control their properties, which might lead to entirely new functionalities. For emergent magnetic orders, our knowledge about the impact of the surface in these materials is currently practically zero, therefore this proposal aim to build unique new capability.The here proposed research programme will address this, and lead to(1) An understanding of the impact of surfaces and interfaces on emergent orders, which are critical to technological exploitation(2) Development new methods for atomic scale imaging and characterization of magnetic structure and magnetic excitations(3) Exploration of novel ways to control emergent magnetic states in reduced dimensionalitiesThis will be achieved through a multi-faceted approach combining methods which probe magnetic states at different depths from the surface, thereby enabling a complete characterization of the surface or interface impact on emergent magnetic states.

正常金属和绝缘子的特性已经充分理解，电子结构的数值计算通常提供了惊人的精度，从而使计算方法能够使用特定特性设计材料。这种理解水平对半导体电子的发展产生了重要作用。量子材料具有广泛的理想特性，可以实现新功能，但是这些功能通常是出乎意料的，并且无法预测它们的特性。量子材料令人惊讶特性的主要示例是巨大的磁性和高温超导性。高温超导导性发生在温度几乎比传统超导体高近十倍（在压力下除外），而巨大的磁场证明具有磁场的电阻率变化，这是磁场大的数量级比巨型磁场的数量级大，以至于在2007年获得了诺贝尔奖的应用程序，其实质性是在2007年获得的。实现这一目标的主要障碍。将应用量子材料的特性仍然难以捉摸。我们对这些材料特性的绝大多数知识都来自批量探针，这些探针提供了有关这些材料中外来阶段的信息，并具有精美的细节。然而，要与外界接口，重要的是要了解表面和界面对它们新兴特性的影响。这些影响将为控制其财产提供新的机会，这可能会导致全新的功能。对于紧急的磁性，我们对这些材料中表面影响的知识实际上是零，因此该建议旨在建立独特的新能力。此处提出的研究计划将解决这一问题，并导致（1）了解表面和界面对紧急订单的影响，对技术剥削至关重要，这些方法是针对技术开发的新方法（2）启动的新方法（2）启用了磁性尺度的影响（2）磁性量表的磁性量表，以实现磁性尺度的影响（2）磁性范围的磁力化范围，磁性量表是磁性尺度化的磁化方法（2）将通过多方面的方法结合方法来实现降低尺寸iTISTIEST的磁状态，该方法结合了从表面的不同深度探测磁性状态，从而使表面或界面对出现磁性状态产生了完整的表征。

项目成果

Multi-fixed point numerical conformal bootstrap: a case study with structured global symmetry

多定点数值共形自举：具有结构化全局对称性的案例研究

• DOI: 10.1007/jhep03(2021)147
• 发表时间: 2021
• 期刊: Journal of High Energy Physics
• 影响因子: 5.4
• 作者: Dowens M

Fisher zeros and persistent temporal oscillations in non-unitary quantum circuits

非酉量子电路中的费雪零点和持续时间振荡

• DOI: 10.48550/arxiv.2103.10628
• 发表时间: 2021
• 作者: Basu S

Spin-orbit driven superconducting proximity effects in Pt/Nb thin films.

• DOI: 10.1038/s41467-023-40757-1
• 发表时间: 2023-08-21
• 期刊: NATURE COMMUNICATIONS
• 影响因子: 16.6
• 作者: Flokstra, Machiel;Stewart, Rhea;Yim, Chi-Ming;Trainer, Christopher;Wahl, Peter;Miller, David;Satchell, Nathan;Burnell, Gavin;Luetkens, Hubertus;Prokscha, Thomas;Suter, Andreas;Morenzoni, Elvezio;Bobkova, Irina V.;Bobkov, Alexander M.;Lee, Stephen
• 通讯作者: Lee, Stephen

Interplay of ferromagnetism and spin-orbit coupling in Sr 4 Ru 3 O 10

Sr 4 Ru 3 O 10 中铁磁性和自旋轨道耦合的相互作用

• DOI: 10.1103/physrevb.106.l241107
• 发表时间: 2022
• 期刊: Physical Review B
• 影响因子: 3.7
• 作者: Benedicic I

Perovzalates: a family of perovskite-related oxalates.

• DOI: 10.1039/c9dt03149a
• 发表时间: 2019-10
• 期刊: Dalton transactions
• 影响因子: 4
• 作者: Rebecca Clulow;Alasdair J. Bradford;Stephen L. Lee;P. Lightfoot