A. Snezhko, O. Volkov, V. Gubankov, I. Gundareva, Y. Divin, V. Pavlovskiy, V. Pokalyakin
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Spectral characterization of planar resonators by terahertz josephson spectroscopy
Here, we report the results of spectral analysis of planar open ring resonators by Josephson spectroscopy. Square shape resonators on separate wafers were positioned in the vicinity of YBa2Cu3O7-x bicrystal Josephson junction (JJ). The DC characteristics of JJ demonstrated specific features related to resonant modes excitation. Resonators of various sizes were analyzed, and excitation of LC-modes at frequencies from 50 GHz to 700 GHz were observed. Resonator quality factors were estimated using resistively shunted model of JJ and resonator equivalent circuit.
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