Microwave-induced constant voltage steps in surface junctions of Bi_{2}Sr_{2}CaCu_{2}O_{8+δ} single crystals

Abstract

We have observed the zero-crossing steps in a surface junction of a mesa structure micro-fabricated on the surface of a Bi-2212 single crystal. With the application of microwave of frequencies 76 and 94 GHz, the current-voltage characteristics show clear voltage steps satisfying the ac Josephson relation. Increasing the microwave power, the heights of the steps show the Bessel-function behavior up to step number n=4. We confirm that the intrinsic surface junction meets the criterion for the observation of zero-crossing steps.

8 pages, 4 figures, submitted to Phys. Rev. B

References in corpus (2)

• Interlayer Transport of Quasiparticles and Cooper pairs in Bi2Sr2CaCu2O8+y Superconductors
• Progressive evolution of tunneling characteristics of in-situ fabricated intrinsic Josephson junctions in Bi_2Sr_2CaCu_2O_{8+delta} single crystals

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• Vortex-flow electromagnetic emission in stacked intrinsic Josephson junctions
• The resistance anomaly in the surface layer of Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+x}$ single crystals under radio-frequency irradiation