Harnessing the Interplay of Superconductivity and Charge Order in Rare-Earth Doped Cuprates for Josephson Junction Applications

利用稀土掺杂铜氧化物中超导性和电荷顺序的相互作用进行约瑟夫森结应用

• 批准号: 580931-2022
• 负责人: Wei, JohnYT
• 金额: $ 1.82万
• 依托单位: University of Toronto
• 依托单位国家: 加拿大
• 项目类别: Alliance Grants
• 财政年份: 2022
• 资助国家: 加拿大
• 起止时间: 2022-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=762691
• 关键词: Harnessing; Interplay; Superconductivity; Charge; Order

With the Alliance International Quantum Catalyst grant, I propose to forge a research collaboration with 3 experimental condensed matter physics groups in the US, focused on the quantum phenomena of superconductivity (SC) and charge order (CO) that occur in the rare-earth doped cuprates. Our research goal is twofold: 1) to further elucidate the interplay between SC and CO, both believed to be due to strong electron correlations, using a unique combination of x-ray scattering, magnetic resonance and electrical transport probes; 2) to explore concrete ways to harness this interplay of phenomena for Josephson junction applications, using cuprate thin-films and heterostructures synthesized by pulsed laser deposition as well as nanoscale ion-beam etching techniques. The proposed research will re-focus timely attention on cuprate superconductors, which have long been regarded as a technologically disruptive class of quantum materials. Successful outcome of our research will contribute vital new knowledge for developing quantum electronic devices based on cuprates and other complex oxides.

借助国际量子催化剂联盟的资助，我提议与美国的 3 个实验凝聚态物理小组建立研究合作，重点研究稀土掺杂中发生的超导 (SC) 和电荷有序 (CO) 的量子现象铜矿。 我们的研究目标有两个：1) 使用 X 射线散射、磁共振和电传输探针的独特组合，进一步阐明 SC 和 CO 之间的相互作用，这两种相互作用被认为是由于强电子相关性所致； 2）探索利用脉冲激光沉积合成的铜酸盐薄膜和异质结构以及纳米级离子束蚀刻技术来利用约瑟夫森结应用中这种现象相互作用的具体方法。拟议的研究将及时重新关注铜酸盐超导体，长期以来，铜酸盐超导体一直被视为技术上具有颠覆性的一类量子材料。我们研究的成功成果将为开发基于铜酸盐和其他复杂氧化物的量子电子器件提供重要的新知识。