Insititute of Bio- and Nanosystems II
Forschungszentrum Jülich GmbH
Leo-Brandt-Strasse
D-52425 Jülich, Germany
contact:  Roger Wördenweber

recent publications:

  • Induced ferroelectricity in strained epitaxial SrTiO3 films on various substrates, R. Wördenweber, E. Hollmann, R. Kutzner, and J. Schubert, J. Appl. Phys. 102, 044119 (2007)
  • Quantitative analysis of the guidance of vortices in superconducting films with magnetic dots, M. P. González, E. Hollmann and R. Wördenweber, J. Appl. Phys. 102, 063904 (2007)
  • Analysis of Defects in Epitaxial Oxide Thin Films via X-Ray Diffraction Technology Thin Solid Films, E. Hollmann and R. Wördenweber , 515 (2007) 3530
  • Ferroelectric Properties of Compressively Strained Epitaxial SrTiO3 Films on Sapphire, R. Wördenweber, E. Hollmann, Mahmood Ali, J. Schubert, G. Pickartz, and Tai Keong Lee Journal of the European Ceramic Society 27 (2007) 2899-2902
  • Low Dielectric Loss BaNd2Ti5O14 Thick Films Prepared by an Electrophoretic Deposition Technique, Zhi Fu, Aiying Wu, P.M. Vilarinho, A.I Kingon, and R. Wördenweber, Appl. Phys. Lett. 90, 052912 (2007)
  • Perspektiven oxidischer supraleitender Bandleiter für die Steigerung der Energieeffizienz, R. Wördenweber, Proceedings der ‚29. Ulmer Gespräche - Werkstoffe und Oberflächen für die Energietechnik - Erzeugung, Anwendung und Optimierung' in Ulm, 10.-11. 5.2007, Eugen G. Leuze-Verlag, Saulgau (Bad SaulGau, Germany), ISBN978-387480-235-2 (2007), p. 88
  • Anomalous Hall effect studied via guided vortex motion, R. Wördenweber, J.S.K. Sankarraj, P. Dymashevski and E. Hollmann, Physica C 434, 101-104 (2006)
  • Magneto-optical imaging of magnetic flux patterns in superconducting films with antidots, V.V. Yurchenko, R. Wördenweber, Yu.M. Galperin, D.V. Shantsev, J.I. Vestgården and T.H. Johansen Physica C: Superconductivity, 437-438, 357-360 (2006)
  • Laser scanning microscopy of guided vortex flow in microstructured high-Tc films, A. Lukashenko, A. V. Ustinov, A. P. Zhuravel, E. Hollmann, and R. Wördenweber J. Appl. Phys. 100, 023913 (2006)
  • P. Lahl, R. Wördenweber The mechanism of nonlinear microwave behaviour in high-Tc devices Supercond. Science and Techn. 17 (2004) 369
  • Fundamental microwave-power-limiting mechanism of epitaxial high-temperature superconducting thin-film devices, P. Lahl, R. Wördenweber, Journal of Applied Physics 97, 113911 (2005)
  • Fundamental microwave-power-limiting mechanism of epitaxial high-temperature superconducting thin-film devices, P. Lahl and R. Wördenweber J. Appl. Phys. 97, 113911 (2005)
  • Monte-Carlo simulation of the particle transport during physical vapor deposition of ceramic superconductors, E.K. Hollmann, V.A. Vol'pyas and R. Wördenweber Physica C: Superconductivity, Volume 425, Issues 3-4, 15 September 2005, p. 101-110
  • On the Principles of Vortex Localization and Motion in Superconductor Thin Films with Artificially Patterned Cavities; V.Yurchenko, M.Jirsa, O.Stupakov, and R.Wördenweber, Journal of Low Temperature Physics, Vol. 139 (2005) 331-338
  • Anisotropic Vortex Channelling in YBaCuO Thin Films with ordered Antidot Arrays, A. Crisan, A. Pross, D. Cole, S.J. Bending, R. Wördenweber, P. Lahl, and E. H. Brandt, Phys. Rev. B 71, 144504 (2005)
  • Nonlinear Microwave Properties of Ferroelectric Thin Films, R. Wördenweber, R. Ott, P. Lahl, Journal of Electroceramics 13 (2005) 223-227.
  • Vortex matter and superconducting electronic devices, R Wördenweber, in High Temperature Superconductivity 2 , Springer Verlag (Berlin-Heidelberg) 2004, edt. A. V. Narlikar, p. 363 -411
  • Magnetic flux dynamics in a hexagonal network of superconducting islands, M Jirsa, V Yurchenko, A V Bobyl, T H Johansen, D V Shantsev, R Wördenweber, Physica C 404 (2004) 200-204
  • Flux flow anistropy in superconducting films with a regular array of holes, M S Welling, R J Wijngaarden, C M Aegerter, R Wördenweber, P Lahl , Physica C 404 (2004) 410-414.
  • Guided vortex motion in high-Tc superconducting thin films and devices with special arrangement of artificial defects, R Wordenweber, P Dymashevski , Physica C 404 (2004) 421-425.
  • Analysis of the vortex dynamics in high-Tc superconducting thin films with regular arrays of artificial defects, V Yurchenko, P Lahl, S Bunte, M Jirsa, R Wördenweber , Physica C 404 (2004) 426-430.
  • Nonlinear Microwave Properties of Ferroelectric Thin Films, R. Ott, P. Lahl, R. Wördenweber, Appl. Phys. Lett. 84, 4147 (2004)
  • Guidance of Vortices and Vortex Ratchet Effect in High-Tc Superconducting Thin Films obtained with Special Arrangements of Antidots, R. Wördenweber, P. Dymashevski, and V. R. Misko, Phys. Rev. B 69, 184504 (2004)
  • The mechanism of nonlinear microwave behaviour in high-Tc devices , P. Lahl, R. Wördenweber, SUST 17 (2004) 369
  • Vortex matter in active and passive superconducting devices, Roger Wördenweber, Peter Lahl and Peter Selders, J. of Low temp. Phys. 130 (2003) 435-447
  • Low-pressure large-area magnetron sputter deposition of YBa2Cu3O7 for industrial applications, Roger Wördenweber, Eugen Hollmann, Michael Poltiasev and Heinz-Werner Neumüller, Supercond. Sci. Technol. 16 (2003) 584-589
  • Nonlinear Microwave Properties of HTS Thin Film Coplanar Devices, P. Lahl and R. Wördenweber, IEEE Transactions on Applied Superconductivity 13 (2003) 2917
  • Energy Gap of MgB2 From Microwave Surface Impedance Measurements, N. Klein, B.B. Jin, R. Wördenweber, P. Lahl, W. N. Kang, Hyeong-Jin Kim, Eun-Mi Choi, Sung-IK Lee, T. Dahm, K. Maki, IEEE Transactions on Applied Superconductivity 13 (2003) 3253
  • Unexpected fourfold symmetry in the resistivity of patterned superconductors, M. Pannetier, R. J. Wijngaarden, I. Fløan, J. Rector, R. Griessen, P. Lahl, R. Wördenweber; Phys. Rev. B 67, 212501 (2003)
  • Reduction of low-frequency noise in high-Tc SQUIDs by artificial defects, R. Wördenweber, P. Selders, Physica C 366 (2002) 135-148
  • Magnetic flux in active and passive superconducting devices, R. Wördenweber, P. Lahl, P. Dymashevski, Physica C 369 (2002) 141-148
  • Alternative Designs of Tunable Ferroelectric Capacities for Microwave Applications, R. Ott and R. Wördenweber, Physica C 372-376 (2002) 540
  • Power Handling Capability and Intermodulation Distortion of High-Tc Microwave Resonators , Lahl, P.; Hein, M. ; Wördenweber, R.: Physica C 372-376 (2002) 482
  • Tunable Ferroelectric Capacities for Microwave Applications, R. Ott and R. Wördenweber,: Appl. Phys. Lett. 80 (2002) 2150
  • Probing microwave properties of high-Tc films via small dc magnetic fields, Lahl, P.; Wördenweber, R. , Appl. Phys. Lett. 81, 505 (2002)
  • Reduction of Low-Frequency Noise in High Tc SQUIDs by Artificial Defects, Wördenweber, R.; Selders, P., Physica C: Superconductivity, 366 (2) (2002) pp. 135-146
  • Visualization of novel flux dynamics in YBCO thin films with antidots, Surdeanu, R. ; Wijngaarden, R.J.; Griessen, R. ; Einfeld, J.; Wördenweber, R.; Europhysics Letters 54, (2001) p. 682
  • Design of tunable ferroelectric filters with a constant fractional bandwidth,Vendik, I.; Vendik, O. ; Pleskachev, V.; Svishchev, A.; Wördenweber, R.: IMS Digest, 2001, V. 3 pp. 1461-1464
  • Pattern formation due to non-linear vortex diffusion, Wijngaarden, R.J. ; Surdeanu, R.; Huijbrechtse, J.M.; Rector, J.H.; Dam, B.; Einfeld, J.; Wördenweber, R.; Griessen, R., Physica C 341-348 (2000) 1011-1014
  • Reduction of the microwave surface resistance in YBCO films by microscopic defects, Einfeld, J.; Lahl, P.; Kutzner, R.; Wördenweber, R.; Kästner, G., Physica C 351 103-117 (2001)
  • Correlation of power handling capability and intermodulation distortion in YBa2Cu3O7-d thin films, Lahl, P.; Wördenweber, R. ; Hein, M.: Appl. Phys. Lett, 79 512 (2001)
  • Low-frequency noise reduction in Y-Ba-Cu-O SQUIDs by artificial defects, Selders, P.; Wördenweber, R., IEEE Trans. on Appl. Supercond. 11 (2001) 928
  • Vortex lattice matching effects and 1/f-noise reduction in HTS films and devices equipped with regular arrays of artificial defects, Wördenweber, R.; Castellanos, A. M.; and Selders, P., Physica C 332 (2000) 27
  • Low-frequency noise reduction in YBa2Cu3O7 superconducting quantum interference devices by antidots, Selders, P.; and Wördenweber, R., Appl. Phys. Lett. 76 (2000) 3277
  • Defects in YBCO films on CeO2 buffered sapphire and LaAlO3 and their impact on the microwave properties, Einfeld, J.; Lahl, P.; Kutzner, R.; Wördenweber, R.; and Kästner, G., Inst. Phys. Conf. Ser. 167 (II) (1999) 25
  • Reduction of 1/f-noise in HTS-SQUIDs by artificial defects, P. Selders, A.M. Castellanos, M. Vaupel, R. Wördenweber, IEEE Trans. on Appl. Supercond. 9 (1999) 2967
  • Mechanism of vortex motion in high-temperature superconductors, R. Wördenweber, Rep. Prog. Phys. 62 (1999) 187-236
  • Growth of high-Tc thin films (review), R. Wördenweber, Supercond. Sci. Technol. 12 (1999) R86 - R102

letzte Änderung 31.07.2008 | | Ausdrucken