Direct-current-assisted microwave quenching of YBa2Cu3O7−δ coplanar waveguide to a highly dissipative state

Direct-current-assisted microwave quenching of YBa2Cu3O7−δ coplanar waveguide to a highly dissipative state

The paper reports on revealing the effect of a strong change in the microwave losses in an high-temperature superconductor (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 cry...

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Veröffentlicht in:Applied physics letters 2014-07, Vol.105 (2)
Hauptverfasser: Cherpak, N. T., Lavrinovich, A. A., Gubin, A. I., Vitusevich, S. A.
Format: Artikel
Sprache:eng
Schlagworte:
Applied physics
Coplanar waveguides
Direct current
High temperature superconductors
Magnetic flux
Single crystals
Substrates
YBCO superconductors
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Zusammenfassung:The paper reports on revealing the effect of a strong change in the microwave losses in an high-temperature superconductor (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 values of Pin and Idc depending on temperature were observed. Apparently, the effect can be explained by self-heating of HTS structure caused by magnetic flux flow under the joint influence of microwave field and direct current.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4890123