INDUCTANCE MEASUREMENTS IN YBA2CU3O7 DC SQUIDS WITH A SUBMICROMETER LINE-WIDTH

We measured the inductances of submicrometer-wide strip lines by using de superconducting quantum interference devices (SQUID's) fabricated from a single layer of YBa2Cu3O7 thin him, The measured inductances co incided well with some numerically calculated inductances consisting o f a magnetic and kinetic component, The proportion of the magnetic com ponent in the total inductance for the line width of 2 mu m was estima ted from calculation to be 56%, The kinetic component increased with t he decrease of the line width and was dominant for line widths less th an 1 mu m. The inductance per square at 4.2 K was measured to be 1.3 p H/square for line widths from 0.5 to 2 mu m.