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Modular assembly of high temperature superconductors from dimensionally reduced iron-based chalcogenide blocks

由尺寸减小的铁基硫族化物块模块化组装高温超导体

基本信息

批准号：
EP/P001653/1
负责人：
Alexey Ganin
金额：
$ 12.77万
依托单位：
University of Glasgow
依托单位国家：
英国
项目类别：
Research Grant
财政年份：
2016
资助国家：
英国
起止时间：
2016 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=EP%2FP001653%2F1
关键词：
Modular assembly temperature superconductors dimensionally

项目摘要

High temperature superconductivity above 100 K in three-atoms-thick layer of FeSe on a SrTiO3 substrate is an ultimate example of how dimensionality can play a transformative role in electronic and magnetic structure of a solid. Whether it is a unique effect of the two-dimensionality or the high temperature superconductivity emerges due to the strain or doping from a substrate this discovery offers a viable building block for a modulated growth of high temperature superconductors - monolayer of FeSe. The assembly of functional materials from discrete building blocks gives competitive advantage for synthesis of solids with specific properties and structure. In this case reactions often can be carried out at ambient conditions when the structure, functionality and chemical integrity of each building block is preserved so they can act as set of modules to be re-connected retrospectively into a global functional network. This programme of work is designed to isolate monolayered FeSe species and to explore chemistry assisted pathways for integrating them as building blocks in conjunction with other 2D systems. In this capacity the functionality of the FeSe layer could be modulated on demand in an open-type synthetic platform simply by changing the layers sequence. This will be achieved by employing a unique ability of the layered 3D chalcogenides to be rendered to 2D atomically thin blocks and then be re-assembled into artificial architectures. We foresee that this research will shed light on the mechanism of superconductivity in single unit cell FeSe that is of fundamental scientific interest and, taking to account that there some hints that superconductivity in FeSe of is conventional in nature, may become a key to room temperature superconductivity. From more practical perspective the proposed research could help create a large-scale solution-based platform for manufacturing of high T superconducting films at ambient temperature and to address an important challenge associated with wider adaptation of current state-of-the-art high T superconductors: how to process brittle ceramics into high quality films on a conducting substrate at ambient temperature. Coupling FeSe layers with other inorganic monolayers of specific properties (e.g. ferromagnetic, semiconductor, insulator) can trigger interesting quantum proximity effects at interfaces. This creates opportunities for adaptation in quantum communication, quantum computing and photonics.

在SrTiO 3衬底上三原子厚的FeSe层中100 K以上的高温超导性是维度如何在固体的电子和磁性结构中发挥变革作用的最终例子。无论是二维的独特效应还是由于衬底的应变或掺杂而出现的高温超导性，这一发现都为高温超导体的调制生长提供了一个可行的构建块-FeSe单层。从离散的构建块组装功能材料为合成具有特定性质和结构的固体提供了竞争优势。在这种情况下，当每个结构单元的结构、功能和化学完整性被保留时，反应通常可以在环境条件下进行，因此它们可以作为一组模块被重新连接到全局功能网络中。这项工作计划旨在分离单层FeSe物种，并探索化学辅助途径，将其作为构建模块与其他2D系统结合。在这种能力下，可以简单地通过改变层序列在开放型合成平台中按需调制FeSe层的功能。这将通过采用分层3D硫属化物的独特能力来实现，以呈现为2D原子薄块，然后重新组装成人工架构。我们预见，这项研究将揭示在单个单元电池FeSe的超导性的机制，这是基本的科学兴趣，并考虑到有一些暗示，在FeSe的超导性是传统的性质，可能成为室温超导性的关键。从更实际的角度来看，拟议的研究可以帮助创建一个大规模的解决方案为基础的平台，在环境温度下制造高T超导薄膜，并解决与更广泛地适应当前最先进的高T超导体相关的一个重要挑战：如何在环境温度下将脆性陶瓷加工成导电衬底上的高质量薄膜。将FeSe层与具有特定性质的其他无机单层（例如铁磁、半导体、绝缘体）耦合可以在界面处触发有趣的量子邻近效应。这为量子通信、量子计算和光子学的适应创造了机会。