Journal
SUPERLATTICES AND MICROSTRUCTURES
Volume 43, Issue 5-6, Pages 518-523Publisher
ACADEMIC PRESS LTD ELSEVIER SCIENCE LTD
DOI: 10.1016/j.spmi.2007.07.029
Keywords
nitride; superconducting; electronic spectroscopy; Josephson junction
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Three layers, NbN based Josephson junction, has been growth by RF and by DC sputtering within the constrain required by the photolithography technology. An interesting superconducting film with critical temperature of Tc = 14 K, well above the temperature of the commercial cryocooler, has been obtained reducing sputtering power and finding a proper N-2 concentration in the gas mixture. The search of the new sputtering parameters has been obtained with the help of electron spectroscopy and X-ray diffraction analysis. (C) 2007 Elsevier Ltd. All rights reserved.
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