Millimeter‐wave surface resistance of laser‐ablated YBa2Cu3O7−δsuperconducting films
Autor: | Joseph D. Warner, K. B. Bhasin, Felix A. Miranda, W. L. Gordon |
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Rok vydání: | 1990 |
Předmět: |
Superconductivity
High-temperature superconductivity Materials science Physics and Astronomy (miscellaneous) Condensed matter physics Transition temperature chemistry.chemical_element Mineralogy Copper law.invention Surface conductivity chemistry law Electrical resistivity and conductivity Sheet resistance Microwave |
Zdroj: | Applied Physics Letters. 57:1058-1060 |
ISSN: | 1077-3118 0003-6951 |
DOI: | 10.1063/1.104281 |
Popis: | The millimeter-wave surface resistance of YBa2Cu3O(7-delta) superconducting films was measured in a gold-plated copper host cavity at 58.6 GHz between 25 and 300 K. High-quality laser-ablated films of 1.2-micron thickness were deposited on SrTiO3 and LaGaO3 substrates. Their transition temperatures were 90.0 and 88.9 K, with a surface resistance at 70 K of 82 and 116 milliohms, respectively. These values are better than the values for the gold-plated cavity at the same temperature and frequency. |
Databáze: | OpenAIRE |
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