Functional Oxide Layers and Superconductors

Oxides and nitrides show a rich varity of electronic and structural properties, which are of interest both for fundamental studies as well as for applications. The main aim of our research is the preparation of advanced oxide and nitride heterostructures with different functionalities. Pulsed laser deposition is used as a flexible method for thin oxide film growth. Part of the work is devoted to the development of advanced buffer layer architectures for YBCO coated conductors including the preparation of textured templates using ion-beam assisted deposition as well as the growth of diffusion barriers for RABiTS based conductors. The growth of atomically flat oxide superlattices on single crystalline substrates is another focus of our present work. The preparation of such oxide structures will allow to study for example the influence of epitaxial strain on different properties, but also the creation of materials with new or advanced functionalities.

Selected Publications

P. Pahlke, S. Trommler, B. Holzapfel, L. Schultz, R. Hühne
Dynamic variation of biaxal strain in optimally doped and underdoped YBa2Cu3O7-δ thin films
J. Appl. Phys. 113 (2013) 123907

R. Gärtner, R. Hühne, J. Engelmann, J. Hänisch, R. Kaltofen, S. Oswald, L. Schultz, B. Holzapfel
High-Jc YBCO coated conductors based on IBAD-TiN using stainless steel substrates
IEEE Trans. Appl. Supercond. 21 (2011) 2920-2923

S. Trommler, R. Hühne, A.D. Rata, L. Schultz, B. Holzapfel
Growth of strained La1‑xSrxCoO3 films and multilayers using layer-by-layer growth
Thin Solid Films 519 (2010) 69-73

S. Trommler, R. Hühne, K. Iida, S. Haindl, P. Pahlke, L. Schultz, B. Holzapfel
Reversible shift in the superconducting transition for La1.85Sr0.15CuO4 and BaFe1.8Co0.2As2 using piezoelectric substrates
New J. Phys. 12 (2010) 103030

R. Hühne, J. Eickemeyer, V.S. Sarma, A. Güth, T. Thersleff, J. Freudenberger, O. de Haas, M. Weigand, J.H. Durrell, L. Schultz, B. Holzapfel
Application of textured highly alloyed Ni-W tapes for coated conductor architectures
Supercond. Sci. Technol. 23 (2010) 034015

Hühne, R., Fähler, S., Holzapfel, B.
Thin biaxially textured TiN films on amorphous substrates prepared by ion-beam assisted pulsed laser deposition
Appl. Phys. Lett. 85 (2004) 2744-2746