RF-Current Effects on Intrinsic Josephson Junctions
We have fabricated intrinsic Josephson junction arrays using Tl aBa2CaCu2O8 thin films. The junctions have dimensions of order 1 μm2 and therefore high slope resistance in the range 1 kω to 10 kω per junction on the quasiparticle branches. We have irradiated the junctions with microwaves at a freque...
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2009
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| Shrnutí: | We have fabricated intrinsic Josephson junction arrays using Tl aBa2CaCu2O8 thin films. The junctions have dimensions of order 1 μm2 and therefore high slope resistance in the range 1 kω to 10 kω per junction on the quasiparticle branches. We have irradiated the junctions with microwaves at a frequency of 6.37 GHz. We observe both microwave-induced vortex-flow branches and strong suppression of the switching current but only when no junctions are in the voltage state. We attribute this observation to the shunting of the high-resistance junctions by the environmental impedance, and discuss the significance of this result for the application of intrinsic junctions as THz sources and qubits. © 2009 IEEE. |
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