Microwave penetration depth measurements onBi2Sr2CaCu2O8single crystals andYBa2Cu3O7−δthin films
| Autor: | Julia M. Phillips, M. R. Beasley, Aharon Kapitulnik, R. C. Taber, S. Y. Hou, L. W. Lombardo, P. Merchant, Chang-Beom Eom, Zhengxiang Ma |
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| Rok vydání: | 1993 |
| Předmět: |
chemistry.chemical_classification
High-temperature superconductivity Materials science Solid-state physics General Physics and Astronomy law.invention Crystallography Surface conductivity chemistry Electrical resistivity and conductivity law Condensed Matter::Superconductivity Thin film Penetration depth Single crystal Inorganic compound |
| Zdroj: | Physical Review Letters. 71:781-784 |
| ISSN: | 0031-9007 |
| DOI: | 10.1103/physrevlett.71.781 |
| Popis: | The temperature dependence of the magnetic penetration depth of ${\mathrm{Bi}}_{2}$${\mathrm{Sr}}_{2}$${\mathrm{CaCu}}_{2}$${\mathrm{O}}_{8}$ single crystals and ${\mathrm{YBa}}_{2}$${\mathrm{Cu}}_{3}$${\mathrm{O}}_{7\mathrm{\ensuremath{-}}\mathrm{\ensuremath{\delta}}}$ thin films has been measured with a parallel plate resonator technique at microwave frequencies. Both materials show a ${\mathit{T}}^{2}$ temperature dependence between 10 and 25 K, and systematic deviations towards a flatter temperature dependence below 10 K. We have also calculated the real part of the complex conductivity of ${\mathrm{YBa}}_{2}$${\mathrm{Cu}}_{3}$${\mathrm{O}}_{7\mathrm{\ensuremath{-}}\mathrm{\ensuremath{\delta}}}$ thin films from our penetration depth and surface resistance data and compare them with those of ${\mathrm{YBa}}_{2}$${\mathrm{Cu}}_{3}$${\mathrm{O}}_{7\mathrm{\ensuremath{-}}\mathrm{\ensuremath{\delta}}}$ single crystals. |
| Databáze: | OpenAIRE |
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