U.S.-France Cooperative Research: Photodoping and Microscopic Structures of YBCO Bicrystal Grain Boundary Josephson Junctions

9815415这个为期三年的奖项旨在支持美国和法国在凝聚态物理方面的合作研究，参与者包括休斯顿大学德克萨斯超导中心的Paul C. W. Chu和Qidu Jiang，以及尼斯大学凝聚态物理实验室的Alain Gilabert。他们的研究处于高温超导的活跃领域。他们合作的目标是将双晶边界Josephson结的光掺杂特性与通过扫描隧道和原子力显微镜技术获得的双晶晶界纳米结构联系起来。样品制造和双晶边界的非破坏性表征将在休斯顿大学进行。这将由法国对它们在光照下的正常状态和超导特性的研究来补充。光掺杂对双晶边界结的影响的研究将促进对光掺杂机制和高温Josephson结弱链接性质的基本理解。

9815415ChuThis three-year award in support of U.S.-France collaborative research in condensed matter physics involves Paul C. W. Chu and Qidu Jiang at the University of Houston's Texas Center for Superconductivity and Alain Gilabert at the Universite de Nice Laboratoire de Physique de la Matiere Condense. Their research is in an active area of high temperature superconductivity. The goal of their collaboration is to correlate the photodoping properties of bicrystal boundary Josephson junctions with nanometer structures at the bicrystal grain boundary which has been obtained by scanning tunneling and atomic force microscopic techniques. Sample fabrication and non-destructive characterization of the bicrystal boundary will be carried out at the University of Houston. This will be complemented by French studies of their normal state and superconducting properties upon light illumination. This study of the photodoping effects on the bicrystal boundary junctions will advance fundamental understanding of photodoping mechanisms and the nature of the weak link of high temperature Josephson junction.