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arxiv: cond-mat/9908459 · v1 · submitted 1999-08-31 · ❄️ cond-mat.supr-con

Microwave-induced constant voltage steps in surface junctions of Bi₂Sr₂CaCu₂O_(8+δ) single crystals

Yong-Joo Doh(1) , Jinhee Kim(2) , Kyu-Tae Kim(2) , Hu-Jong Lee(1) ((1) Pohang University of Science , Technology , (2) Korea Research Institute of Standards , Science) This is my paper
classification ❄️ cond-mat.supr-con
keywords stepssurfacejunctionmicrowavesinglevoltagezero-crossingapplication
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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.

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