Critical Properties and Proximity Effect in High TemperatureSuperconducting Films

Schuller教授将研究超导体薄膜的特性，以更好地理解超导机制，并为这些特性的改进提供帮助。实验将使用溅射和分子束外延（MBE）技术来生长高温氧化物超导体的多晶、纹理和外延薄膜。成分、成分均匀性和结构将使用许多表面技术来确定，包括离子铣削、俄歇、x射线光电子和离子散射光谱。物理性质，如磁输运，超导温度，临界电流，和磁场响应在孤立的高温超导薄膜和薄膜与其他材料接近将被检查。在材料制备过程中，要特别注意基材的选择、制备后的热处理和氧处理。

Professor Schuller will study the properties of thin superconducting films to better understand the superconducting mechanisms and to provide for improvement of these properties. The experiments will use the sputtering and molecular beam epitaxy (MBE) techniques to grow polycrystalline, textured, and epitaxial films of high temperature oxide superconductors. The composition, compositional uniformity, and structure will be determined using a number of surface techniques including ion milling, Auger, x-ray photoelectron, and ion scattering spectroscopies. Physical properties such as magnetotransport, superconducting temperature, critical currents, and magnetic field response on isolated high temperature superconducting films and films in proximity with other materials will be examined. Special care will be taken in the preparation of the materials with regard to choice of substrate, post-preparation heat and oxygen treatment.