{'fraction_non_alphanumeric': 0.030303030303030304, 'fraction_numerical': 0.020202020202020204, 'mean_word_length': 5.41726618705036, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Characterization of YBa2Cu3O7−δ coplanar resonator for microwave kinetic inductance detectors

We demonstrate an improved YBa2Cu3O7−δ -based microwave kinetic inductance detector with a quality factor Qi∼2.5×104 and noise equivalent power, ∼10−12WHz−1 at 10 K. Zero field cooled (ZFC) and field cooled (FC) measurements of the magnetic field dependence of the resonance characteristics, show substantially different behavior, indicating that both the screening currents and vortices play a role. The ZFC measurements exhibit a sharp decrease of the resonance frequency, fr , and Qi at low fields, up to the full penetration field, revealing the dominant role of the screening currents. In contrast, the FC measurements exhibit a moderate decrease of fr and Qi with field, revealing the role of vortices and reflecting the field dependence of the penetration depth in a d-wave superconductor.