单层BSCCO中的高温超导谱图数据集

我们通过机械解理方法制备了本征的单层铋锶钙铜氧（Bi2Sr2CaCu2O8+δ，简称Bi-2212）器件，结合输运和扫描隧道显微学以及谱学的数据，我们发现：二维极限下的单层Bi-2212已经具备了高温超导所需要的一切因素；不论是高温超导态本身，还是与其有关的诸多关联电子态，本质上都是二维现象。这个结论给高温超导的二维理论模型、以及所有之前高温超导块体材料的表面研究提供了更加坚实的实验基础。更重要的是，这项工作从技术上探索了对于极不稳定二维材料的研究方法，拓展了我们对于二维材料研究的视野。

We fabricated intrinsic monolayer bismuth strontium calcium copper oxide (Bi2Sr2CaCu2O8+δ, abbreviated as Bi-2212) devices via mechanical exfoliation. Combining transport measurements, scanning tunneling microscopy (STM) and spectroscopic data, we found that the monolayer Bi-2212 at the two-dimensional (2D) limit already possesses all the necessary elements for high-temperature superconductivity. Both the high-temperature superconducting state itself and the various correlated electronic states associated with it are fundamentally two-dimensional phenomena. This conclusion establishes a more robust experimental basis for the two-dimensional theoretical models of high-temperature superconductivity, as well as all prior surface studies on bulk high-temperature superconducting materials. More importantly, this work technically explores research methodologies for extremely unstable two-dimensional materials, broadening our research horizons for two-dimensional materials.

搜集汇总

背景与挑战

背景概述

该数据集聚焦于单层铋锶钙铜氧（Bi-2212）的高温超导研究，通过机械解理制备器件并结合多学科实验数据，证实高温超导及其关联电子态本质上是二维现象，为相关理论模型提供了关键实验支撑。数据集包含158.29MB的135个文件，涵盖扫描隧道显微学等谱图数据，由复旦大学张远波团队在2023年发布，属于国家重点研发计划项目成果。