Thermal diffusivity of Bi2Sr2CaCu2O8 single crystals
| Autor: | Gordon S. Kino, Seungoh Ryu, J.G. Fanton, Aharon Kapitulnik, X. D. Wu, David B. Mitzi |
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| Rok vydání: | 1993 |
| Předmět: |
Superconductivity
Materials science Condensed matter physics Scattering Energy Engineering and Power Technology Electron phonon coupling Condensed Matter Physics Thermal diffusivity Electronic Optical and Magnetic Materials Crystal Thermal conductivity Lattice (order) Electrical and Electronic Engineering Anisotropy |
| Zdroj: | Physica C: Superconductivity. 218:417-423 |
| ISSN: | 0921-4534 |
| DOI: | 10.1016/0921-4534(93)90044-q |
| Popis: | We have made direct measurements of the temperature dependence of the thermal diffusivity along all three axes of a single- crystal Bi 2 Ca 2 SrCu 2 O 8 superconductor. We find that the thermal diffusivity is enhanced dramatically along the Cu-O planes below T c . From our results, we estimate a 40% electronic contribution to the diffusivity along the Cu-O planes. At room temperature the total anisotropy in thermal diffusivity is 7:1, while the lattice contribution has only a 4.2:1 anisotropy. |
| Databáze: | OpenAIRE |
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