High-Tc ramp-type Josephson junctions on MgO substrates for Terahertz applications


Myoren, Hiroaki and Verhoeven, Martin A.J. and Chen, Jian and Nakajima, Kensuke and Yamashita, Tsutomu and Blank, Dave H.A. and Rogalla, Horst (1998) High-Tc ramp-type Josephson junctions on MgO substrates for Terahertz applications. IEEE Transactions on Applied Superconductivity, 8 (3). pp. 132-136. ISSN 1051-8223

Abstract:The authors successfully fabricated high-Tc ramp-type junctions with PrBa2Cu3-xGaxO7-δ (PBCGO: x=0.1, 0.4) barriers on MgO substrates. The junctions showed resistively shunted Josephson junction (RSJ)-like I-V curves with thermally and voltage activated conductivity. The IcRn products for these junctions scaled very well with the Ga-doping. Maximum response of the junctions for 100-GHz millimeter-wave irradiation could be observed up to 12 mV corresponding to 6 THz. Using far infrared laser radiation, we confirmed a terahertz (THz) response of these junctions. These results show promise for THz-wave applications of ramp-type Josephson junctions.
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Copyright:© 1998 IEEE
Science and Technology (TNW)
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Link to this item:http://purl.utwente.nl/publications/23572
Official URL:http://dx.doi.org/10.1109/77.712144
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