Physics of Novel Superconducting Structures

这项研究涉及新的超导微结构的物理：均匀亚微米粒子、介观界面结构和磁通耦合超晶格。该研究采用了新的真空沉积和微电子制造方法。这一研究有助于加深对高T_c超导体某些突出问题的认识，有助于制备呈现新的量子干涉现象的微结构。在适当的情况下，将探索这项研究在超导设备中的潜在应用。亚微米粒子将被用来测量穿透深度各向异性、临界场增强以及它们与传导各向异性、层间耦合、配对对称性和有限尺寸效应之间的温度关系。提出了一种确定准粒子能谱，并探索介观结构中量子干涉效应的实验方法。这种磁通耦合结构有可能为直流变压器提供多个二次元件和大耦合比。

This research deals with the physics of novel superconducting microstructures: uniform submicron particles, mesoscopic interfface structures, and magnetic flux coupled superlattices. The research employs novel vacuum deposition and micro-electronics fabrication methods. The research can lead to improved understanding of certain outstanding problems of high-Tc superconductors and the fabrication of microstructures which exhibit new quantum interference phenomena. Where appropriate, potential applications of the research to superconducting devices will be explored. The submicron particles will be used in experiments to measure the temperature dependence of the penetration depth anisotropy, critical field enhancement and their relation to conduction anisotropy, interlayer coupling, pairing symmetry, and finite size effects. An experiment is proposed to determine the quasiparticle energy spectra, and search for quantum interference effects in mesoscopic structures. The flux coupling structures will potentially provide DC transformers with multiple secondaries and large coupling ratios.