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Study of NbN Ultra-thin Films for THz Hot-electron Bolometers

Victor P. Afanas'ev ; Sascha Krause (Institutionen för rymd- och geovetenskap, Avancerad mottagarutveckling) ; Alexander V. Lubenchenko ; Alexander A. Batrakov ; Vincent Desmaris (Institutionen för rymd- och geovetenskap, Avancerad mottagarutveckling) ; Alexey Pavolotsky (Institutionen för rymd- och geovetenskap, Avancerad mottagarutveckling) ; Victor Belitsky (Institutionen för rymd- och geovetenskap, Avancerad mottagarutveckling)
25th International Sympsoium on Space Terahertz Technology, ISSTT 2014; Moscow; Russian Federation; 27 April 2014 through 30 April 2014 p. 141-143. (2014)
[Konferensbidrag, refereegranskat]

Hot-electron bolometer (HEB) mixers based on superconducting ultra-thin NbN films are largely used for THz spectroscopy for space and ground-based observations. Performance of the HEB mixers directly depends on the details of the structure and composition of thin film surface, as well as the nitrogen composition and its depth distribution. In this work, we present the study of the composition and the surface oxidation state of NbN films grown at two different temperatures and of 5 and 10 nm thickness.

Nyckelord: Hot-electron bolometers, NbN, surface analysis, thin films



Denna post skapades 2015-01-19. Senast ändrad 2015-11-11.
CPL Pubid: 211090