Electric field effect in Sm/sub 1-x/Ca/sub x/Ba/sub 2/Cu/sub 3/O/sub y/ bicrystal junctions


A three terminal device was fabricated by depositing a thin film of Ca-doped SmBa/sub 2/Cu/sub 3/O/sub y/ on a bicrystal SrTiO/sub 3/ substrate and then structuring a gate over the resulting junction. The channel shows RSJ-like Josephson junction behavior. By applying a voltage to the gate, a large electric field effect was observed. The largest field… (More)


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