Towards a Hybrid High Critical Temperature Superconductor Junction With a Semiconducting InAs Nanowire Barrier
作者： Fabio Beltram , Francesco Tafuri , Domenico Montemurro , Davide Massarotti , Procolo Lucignano
DOI: 10.1007/S10948-015-3174-7
关键词: Josephson effect 、 Electrode 、 Nanowire 、 Semiconductor 、 Scaling 、 Materials science 、 Superconductivity 、 Optoelectronics 、 Nanostructure 、 Cuprate
摘要: We investigate a new architecture for the implementation of Josephson junctions combining high critical temperature superconductors (HTS) and semiconductor (Sm) nanowires (NWs). The devices are obtained starting from pre-patterned YBaCuO (YBCO) electrodes assembling suspended InAs-NWs bridges between nearby superconductive banks. Such non-standard approach is necessary in case HTS since growth conditions cuprates incompatible with thermal stability Sm nanostructures. device behavior as function length L InAs bridge. For > 200 nm, all display tendency to insulation at low temperatures. ∼ metallic-like obtained, signaling possible onset transition junction. Technological limitations on width gap separating YBCO banks currently prevent further scaling. Our results suggest that reduction size trench can lead functional YBCO/InAs-NWs/YBCO junctions.
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