通过量身定制的化电路板保留约瑟夫森合的扭曲酸连接点
Tommaso Confalone1,2, Flavia Lo Sardo1,3, Domenico Montemurro4
1Leibniz Institute for Solid State and Materials Research Dresden (IFW Dresden), 01069, Dresden, Germany.
Small (Weinheim an der Bergstrasse, Germany)
|November 11, 2025
概括
研究人员开发了一种干燥的冷方法,以创建可复制的扭曲Bi2Sr2CaCu2O8+δ (BSCCO) 约瑟夫森结. 这种技术保留了微妙的超导特性,并使moiré材料的可扩展应用成为可能.
科学领域:
- 凝聚物质物理学 凝聚物质物理学
- 材料科学 材料科学 材料科学
- 纳米技术 纳米技术
背景情况:
- 对扭曲的范德瓦尔斯异构结构的控制制造是moiré材料的关键.
- 可复制性是一项挑战,特别是对于像Bi2Sr2CaCu2O8+δ (BSCCO) 这样的对空气敏感的超导体.
- 在制造过程中保持微妙的超导特性至关重要.
研究的目的:
- 介绍一种干燥,惰性和冷组装方法,用于制造高质量的BSCCO约瑟夫森扭曲连接点 (JJs).
- 为应对制造超导范德瓦尔斯异构结构时的可重复性挑战.
- 为了为未来的应用程序提供可扩展和适应的平台.
主要方法:
- 使用化纳米膜 (NMBs) 与预先设计的电极.
- 采用冷堆叠技术 (CST) 进行组装.
- 嵌入不对称的膜设计 (例如,双悬臂) 来抑制振动引起的障碍.
主要成果:
- 通过使用干燥的冷协议,实现了高质量的扭曲BSCCO JJs的制造.
- 在接口形成和电接触集成过程中防止热和化学降解.
- 观察到与最先进的设备相比的取决于扭转角度的约瑟夫森合器.
- 由于抑制振动引起的障碍,表现出尖和歇斯底里的电流电压特征.
结论:
- 提出的方法提供了一个简单,多功能,可扩展和适应的平台,用于制造超导范德瓦尔斯异构结构.
- 强调接口和接触工程在实现可重复性方面的关键作用.
- 通过受控的异构结构制造,为推进moiré材料应用铺平了道路.
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