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

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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

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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
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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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Metis ID: 128371