DC-assisted microwave quenching of YBa2Cu3O7-δ coplanar waveguide to a highly dissipative state
arXiv:1504.08216 · doi:10.1063/1.4890123
Abstract
The paper reports on finding the effect of a strong change in the microwave losses in an HTS-based coplanar waveguide (CPW) at certain values of the input power Pin and direct current Idc. CPW on the basis of 150 nm thick YBa2Cu3O7-δ epitaxial film on a single crystal MgO substrate was studied experimentally. A sharp and reversible transition of the CPW into a strongly dissipative state at the certain meanings of Pin and Idc depending on temperature was observed. Apparently the effect can be explained by self-heating of HTS structure caused by magnetic flux flow under the joint influence of MW and DC.
9 pages, 5 figures, 17 references