Observation and a model for resonances in one-dimensional unshunted Josephson-junction arrays with ground planes

作     者：B. Vasilić E. Ott T. Antonsen P. Barbara C. J. Lobb 

作者机构：Laboratory for Structural NMR Imaging Department of Radiology University of Pennsylvania Philadelphia Pennsylvania 19104 USA Department of Physics Department of Electrical and Computer Engineering and Institute for Research in Electronics and Applied Physics University of Maryland College Park Maryland 20904 USA Georgetown University Department of Physics Washington DC 20057-0995 USA Center for Superconductivity Research Department of Physics University of Maryland College Park Maryland 20742 USA 

出 版 物：《Physical Review B》 (物理学评论B辑：凝聚态物质与材料物理学)

年 卷 期：2003年第68卷第2期

页      面：024521-024521页

核心收录：

学科分类：07[理学] 0702[理学-物理学] 

摘      要：We present data from one-dimensional unshunted Josephson-junction arrays with ground planes, showing resonant behavior for certain values of the critical current. Due to the hysteresis of the current-voltage characteristics, the number of junction that oscillate on resonance can be controlled. The resonant frequency decreases as more junctions are switched onto the resonance and increases as the array length is increased. We develop a transmission-line model of the arrays that reproduces these experimental observations. We also examine the microscopic origin of this model and compare it to existing models in the literature.