混合高温超导体-半导体隧道二极管
Hybrid high-temperature superconductor-semiconductor tunnel diode
摘要：
我们报告的混合高Tc超导体半导体隧道结的演示，使新的跨学科的凝聚态研究的方向。该器件是由我们新开发的机械键合技术，导致高Tc半导体平面结作为超导隧道二极管。Bi 2Sr 2CaCu 2 O 8 +δ与体GaAs或GaAs/AlGaAs量子阱结合的混合结的隧道光谱表征显示出过电压和非线性-与d波超导体-正常材料结的理论预测非常一致，并且与扫描隧道显微镜获得的光谱相似。使用Bi 2Sr 2CaCu 2 O 8 +δ与石墨或Bi 2 Te 3组合来展示额外的结。我们的研究结果为非常规超导研究，新材料和量子技术应用的新方法铺平了道路。
英文摘要：
We report the demonstration of hybrid high-Tc-superconductor-semiconductor tunnel junctions, enabling new interdisciplinary directions in condensed matter research. The devices were fabricated by our newly-developed mechanical bonding technique, resulting in high-Tc-semiconductor planar junctions acting as superconducting tunnel diodes. Tunneling-spectra characterization of the hybrid junctions of Bi2Sr2CaCu2O8+δ combined with bulk GaAs, or a GaAs/AlGaAs quantum well, exhibits excess voltage and nonlinearity - in good agreement with theoretical predictions for a d-wave superconductor-normal material junction, and similar to spectra obtained in scanning tunneling microscopy. Additional junctions are demonstrated using Bi2Sr2CaCu2O8+δ combined with graphite or Bi2Te3. Our results pave the way for new methods in unconventional superconductivity studies, novel materials and quantum technology applications.
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