Dresden 2017 – scientific programme

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TT: Fachverband Tiefe Temperaturen

TT 55: Poster Session: Superconductivity 2

TT 55.15: Poster

Wednesday, March 22, 2017, 15:00–19:00, P2-OG3

Emission of terahertz radiation from intrinsic Josephson junctions in Bi₂Sr₂CaCu₂O_8+x stacks — •Johannes Hampp¹, Olcay Kizilaslan^1,2, Raphael Wieland¹, Fabian Rudau¹, Xianjing Zhou^3,4, Min Ji^3,4, Ya Huang^3,4, Luyao Hao^3,4, Nickolay Kinev⁵, Oleg Kiselev⁵, Peiheng Wu³, Valery Koshelets⁵, Huabing Wang^3,4, Dieter Koelle¹, and Reinhold Kleiner¹ — ¹Physikalisches Institut and Center for Quantum Science (CQ) in LISA⁺, Universität Tübingen, Germany — ²Inonu University, Department of Biomedical Engineering, Faculty of Engineering 44280, Malatya, Turkey — ³National Institute for Materials Science, Tsukuba, Japan — ⁴Research Institute of Superconductor Electronics, Nanjing University, China — ⁵Kotel’nikov Institute of Radio Engineering and Electronics, Moscow, Russia

Josephson junctions (JJs) offer a natural way to convert a dc-voltage into high-frequency electromagnetic radiation. The high-T_c superconductor Bi₂Sr₂CaCu₂O_8+x intrinsically forms stacks of JJs. Such stacks can be used as generators for electromagnetic radiation of frequencies in the sub-THz and low-THz regime. Radiation power and frequency strongly depend on the electric and thermal parameters of the stack. To systematically investigate this dependence we vary these parameters in-situ by changing the charge carrier density via current injection. Experimental results and theoretical simulations will be presented.