Dresden 2009 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe
TT: Fachverband Tiefe Temperaturen
TT 10: Superconductivity: Tunneling, Josephson Junctions, SQUIDs
TT 10.1: Vortrag
Montag, 23. März 2009, 14:00–14:15, HSZ 105
Terahertz emission from intrinsic Josephson junctions of high-Tc superconductor Bi2212 — •Lütfi Özyüzer1,2, Hasan Köseoglu1, Fulya Türkoglu1, Cihan Kurter3, Ulrich Welp3, Ken E. Gray3, Alex E. Koshelev3, Takashi Yamamoto4, Kazuo Kadowaki4, Yilmaz Simsek2, Yuri Koval2, Paul Müller2, and Huabing Wang5 — 1Department of Physics, Izmir Institute of Technology, Izmir, Turkey — 2Phys. Inst. III, University of Erlangen-Nurnberg, Germany — 3Materials Science Division, Argonne National Laboratory, Illinois, USA — 4University of Tsukuba, Japan — 5National Institute for Materials Science, Japan
Recent realization of coherent and continuous emission of THz waves from intrinsic Josephson junctions of layered high temperature superconductor Bi2Sr2CaCu2O8+d (Bi2212) is promising to fill electromagnetic spectrum’s Terahertz gap [1]. Large area mesas ranging from 300x100 to 300x40 µm2 with height greater than 1 µm were formed on Bi2212. Current-voltage and THz emission characteristics were obtained at various temperatures. THz emissions of mesas were studied by Si-composite bolometer and the emission frequencies were obtained.
[1] L. Ozyuzer, A. E. Koshelev, C. Kurter, N. Gopalsami, Q. Li, M. Tachiki, T. Yamamoto, H. Minami, H. Yamaguchi, T. Tachiki, K. E. Gray, W. K. Kwok and U. Welp, Science 318, 1291 (2007).
*This research is partially supported by TUBITAK (Sci. and Tech. Research Council of Turkey) project number 108T238. L.O. acknowledges support from Alexander von Humboldt Foundation.