论文标题
点按需局部修改高 - $ t_ \ text {c} $超导率在几个单位细胞厚bi $ _2 $ _2 $ _2 $ _2 $ cacu $ _2 $ _2 $ o $ $ _ {8+Δ} $
On-demand local modification of high-$T_\text{c}$ superconductivity in few unit-cell thick Bi$_2$Sr$_2$CaCu$_2$O$_{8+δ}$
论文作者
论文摘要
高温超导体（HTS）对于潜在应用和理解强相关的起源很重要。 bi $ _2 $ sr $ _2 $ cacu $ _2 $ o $ _ {8+δ} $（bscco）（van der waals材料）提供了一个平台，可以将物理学探测到单位细胞。通过对2DEG和氧化物异质结构进行构图引导电子流，这使新的功能并获得了新科学的访问。同样，在较小的长度尺度上修改HTS中的超导性将对超导电子设备引起极大的兴趣。在这里，我们报告了对几个单位细胞厚BSCCO的运输研究，并通过将金属沉积在地面上，在当地修改其超导性。铬（CR）在BSCCO选定区域的表面沉积导致模式区域的绝缘行为。 CR局部耗尽Cuo $ _2 $飞机的氧气，并破坏下面层中的超导性。我们修改超导性的技术适合于制造亚微米超导电线和更复杂的超导电子设备。
High-temperature superconductors (HTS) are important for potential applications and for understanding the origin of strong correlations. Bi$_2$Sr$_2$CaCu$_2$O$_{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, will be of immense interest for superconducting electronics. Here we report transport studies on few unit-cell thick BSCCO and modify its superconductivity locally by depositing metal on the surface. Deposition of chromium (Cr) on the surface over a selected area of BSCCO results in insulating behavior of the patterned region. Cr locally depletes oxygen in CuO$_2$ planes and disrupts the superconductivity in the layers below. Our technique of modifying superconductivity is suitable for making sub-micron superconducting wires and more complex superconducting electronic devices.
