Abstract
We have realized a new method for the fabrication of a small mesa structure made of a few Bi2Sr2CaCu2O8+δ intrinsic Josephson junctions by using polyimide as an adhesive to glue a crystal on a substrate. It is demonstrated that this method provides a small mesa structure having only five junctions and exhibiting uniform tunneling characteristics. We describe the details of the fabrication process and the current–voltage characteristics for a typical mesa obtained, together with the short pulse tunneling spectroscopy results.
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