This title appears in the Scientific Report :
2005
Please use the identifier:
http://hdl.handle.net/2128/2115 in citations.
Please use the identifier: http://dx.doi.org/10.1063/1.1929088 in citations.
Fundamental microwave power limiting mechanism of epitaxial HTS thin film devices
Fundamental microwave power limiting mechanism of epitaxial HTS thin film devices
In this paper we present an experimental investigation of the nonlinear microwave properties of coplanar resonators patterned from epitaxial Y1Ba2Cu3O7-delta thin films in zero-field-cooled, field-cooled, and field-sweep experiments in the search for the fundamental limiting mechanism. The impact of...
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Personal Name(s): | Lahl, P. |
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Wördenweber, R. | |
Contributing Institute: |
Institut für Bio- und Chemosensoren; ISG-2 Center of Nanoelectronic Systems for Information Technology; CNI |
Published in: | Journal of applied physics, 97 (2005) S. 113911 |
Imprint: |
Melville, NY
American Institute of Physics
2005
|
Physical Description: |
113911 |
DOI: |
10.1063/1.1929088 |
Document Type: |
Journal Article |
Research Program: |
Materialien, Prozesse und Bauelemente für die Mikro- und Nanoelektronik |
Series Title: |
Journal of Applied Physics
97 |
Subject (ZB): | |
Link: |
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Publikationsportal JuSER |
Please use the identifier: http://dx.doi.org/10.1063/1.1929088 in citations.
In this paper we present an experimental investigation of the nonlinear microwave properties of coplanar resonators patterned from epitaxial Y1Ba2Cu3O7-delta thin films in zero-field-cooled, field-cooled, and field-sweep experiments in the search for the fundamental limiting mechanism. The impact of magnetization, vortices, intrinsic limitation, grain boundaries, and thermal effects is evaluated. We find that the fundamental limiting mechanism in the absence of thermal and grain-boundary effects is given by the dc critical current density of the superconducting material which masks the intrinsic limitation expected at larger rf current densities. Demagnetizing effects, penetration barriers, vortex penetration, pinning, and relaxation of inhomogeneous vortex distributions are experimentally observed and in agreement with theoretical expectations. The experimental results are modeled in terms of a simple model for the power-handling capability which is based on a superposition of all current densities in the resonator and gives a consistent explanation of all experiments in magnetic fields and in zero field. (C) 2005 American Institute of Physics. |