High‐temperature superconductors (HTSs) are important for potential applications and for understanding the origin of strong correlations. Bi₂Sr₂CaCu₂O_8+δ (BSCCO), a van der Waals material, offers a platform to probe the physics down to a unit‐cell. Guiding the flow of electrons by patterning 2DEGS and oxide heterostructures has brought new functionality and access to new science. Similarly, modifying superconductivity in HTS locally, on a small length scale, is of immense interest for superconducting electronics. A route to modify superconductivity locally by depositing metal on the surface is reported here by transport studies on few unit‐cell thick BSCCO. Deposition of chromium (Cr) on the surface over a selected area of BSCCO results in insulating behavior of the underlying region. Cr locally depletes oxygen in CuO₂ planes and disrupts the superconductivity in the layers below. This technique of modifying superconductivity is suitable for making sub‐micrometer superconducting wires and more complex superconducting devices.

中文翻译：

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少量晶胞中Bi2 Sr2 CaCu2 O8 +δ的高Tc超导性的按需局部改性。

高温超导体（HTS）对于潜在应用和理解强相关性的起源很重要。Bi ₂ Sr ₂ CaCu ₂ O _{8 +δ}（BSCCO）是范德华斯材料，提供了一个平台，可以探究物理现象直至单元电池。通过对2DEGS和氧化物异质结构进行构图来引导电子的流动带来了新的功能并获得了新的科学方法。类似地，对于超导电子设备，在小规模的本地修改HTS中的超导性是极为重要的。在少数几单位晶胞厚度的BSCCO上进行的运输研究报告了通过在表面沉积金属来局部改变超导性的方法。在BSCCO选定区域的表面上沉积铬（Cr）会导致下层区域的绝缘行为。Cr局部消耗CuO _2中的氧气平面并破坏下面各层中的超导性。这种修改超导性的技术适用于制造亚微米级的超导线材和更复杂的超导器件。