Ilin, Konstantin and Schneider, R and Gerthsen, D and Engel, Andreas and Bartolf, Holger and Schilling, Andreas and Semenov, Alexei and Hübers, Heinz-Wilhelm and Freitag, B and Siegel, Michael (2008) Ultra-thin NbN films on Si: crystalline and superconducting properties. In: Journal of Physics: Conference Series, 97. IOP Publishing. 8th European Conference on Applied Superconductivity (EUCAS 2007), 2007-09-16 - 2007-09-20, Brussels (Belgium).
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We present results on superconducting and crystalline properties of NbN films with a thickness smaller than 10 nm. The films were deposited using reactive magnetron sputtering on heated silicon substrates. Zero resistance critical temperatures of about 9 K have been measured for films with a thickness of about 5 nm and reaches values ≈12 K for 10 nm thick films. A value of the superconducting coherence length of about 4 nm was estimated from the measurements of the second critical magnetic field. High-resolution transmission electron microscopy accompanied with electron-spectroscopy techniques was used to analyze the structure, thickness, and film-substrate interface of fabricated films. The interrelations between fabrication conditions, superconducting and crystalline properties of NbN films on Si substrates are presented and discussed.
|Document Type:||Conference or Workshop Item (UNSPECIFIED)|
|Title:||Ultra-thin NbN films on Si: crystalline and superconducting properties|
|Journal or Publication Title:||Journal of Physics: Conference Series|
|In ISI Web of Science:||No|
|Number of Pages:||6|
|Keywords:||ultra-thin films, superconductivity|
|Event Title:||8th European Conference on Applied Superconductivity (EUCAS 2007)|
|Event Location:||Brussels (Belgium)|
|Event Type:||international Conference|
|Event Dates:||2007-09-16 - 2007-09-20|
|HGF - Research field:||Aeronautics, Space and Transport (old)|
|HGF - Program:||Space (old)|
|HGF - Program Themes:||W EW - Erforschung des Weltraums|
|DLR - Research area:||Space|
|DLR - Program:||W EW - Erforschung des Weltraums|
|DLR - Research theme (Project):||W - Vorhaben IR-Astronomie (old)|
|Institutes and Institutions:||Institute of Planetary Research > Terahertz and Infrared Sensors|
|Deposited By:||Prof.Dr. Alexey Semenov|
|Deposited On:||05 Jan 2009|
|Last Modified:||17 Mar 2010 11:41|
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