aCuO Nanobridges a S

Abstract- YBaCuO nanobridges and inductively shunted dc-SQUIDS have been patterned by direct Focused Ion Beam milling. ~anobridges manifest true Josephson effect, which can be expla~ned by coherent motion of Abrikosov vortices in the bridge. An enhancement of this effect is proposed to be due to local suppression of the superconducting properties within the nanobridge area. This leads to a transition from SNS to SS'S type b e h a v i ~ ~ of the nano ridge with decreasing temperature. TempErature d e ~ e n d ~ n c e of the critical current, dynamic resis-tance, and SQUID voltage-flux modulation is discussed. The flux noise level of the nanoSQUID is measured to be about 6.