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Frequency Dependence of the Nonlinear Response in YBA2Cu307-x Transmission Lines



Jordi Mateu, James Booth, Brian Moeckly


We evaluate the frequency dependence of the nonlinear response in High Temperature Superconductor YBa2Cu3O7-x thin films by simultaneously measuring the nonlinear intermodulation products and harmonic generation in broadband superconducting transmission lines at 76 K. The frequencies of the two-tone incident signal are set to produce spurious signals from 1 GHz to 21 GHz. We extract a nonlinear term by applying a model of spurious signal generation in superconducting transmission lines to our measurement results. We find that this nonlinear term follows a linear dependence on frequency, indicating a dominant contribution of the nonlinear inductance over the nonlinear resistance , (), for the superconducting nonlinear response.
Applied Physics Letters


Mateu, J. , Booth, J. and Moeckly, B. (2007), Frequency Dependence of the Nonlinear Response in YBA2Cu307-x Transmission Lines, Applied Physics Letters, [online], (Accessed April 19, 2024)
Created January 4, 2007, Updated October 12, 2021