Novel concepts of superconductive optoelectronic devices: resonances of photoconductivity in the Cu2O gate region

摘要

Abstract: On the basis of our discoveries of anomalous photoconductivity of insulators correlated with high-Tc superconductivity, we introduce novel concepts of 'superconductive optoelectronic devices'. We have proposed that one must be able to fabricate a new type of device by combining these photoconductors for the gate region and relevant superconductors for the source and drain regions, both effective below their Tc's. We have been continuing a series of our further experimental studies seeking actual possibilities by utilizing the basic substance Cu$-2$/O for the gate material and superconductive LBCO, LSCO, and YBCO for the source and drain materials, e.g., YBCO/Cu$- 2$/O/YBCO. Here, we report an observation of resonant and hybrid emergences of photoconductivity of Cu$-2$/O in the gate region peculiarly in conjugation with the high-Tc superconductivity utilized in the source and drain regions in superconductive optoelectronic devices. Microwave photosignals at 35GHz guarantee a high-speed operation of the device in the n-sec region. We feed these results in a Nano-engineering back to basic physics of oxide superconductor in order to shed a new light on substantial natures of the Cu-O based high-Tc superconductivity. !12