Fluctuation of vortices in single-crystalTl2Ba2CuO6superconductors
| Autor: | Allen M. Hermann, H. M. Duan, Fulin Zuo, D. Vacaru |
|---|---|
| Rok vydání: | 1993 |
| Předmět: |
chemistry.chemical_classification
Josephson effect Superconductivity Physics Statistics::Theory High-temperature superconductivity Statistics::Applications Condensed matter physics Transition temperature law.invention Magnetization chemistry law Condensed Matter::Superconductivity Single crystal Critical field Inorganic compound |
| Zdroj: | Physical Review B. 47:8327-8330 |
| ISSN: | 1095-3795 0163-1829 |
| DOI: | 10.1103/physrevb.47.8327 |
| Popis: | We report magnetization studies on single crystals of ${\mathrm{Tl}}_{2}$${\mathrm{Ba}}_{2}$${\mathrm{CuO}}_{6}$ superconductors. For magnetic fields parallel to the c-axis configuration, fluctuations of vortices are observed in this layered compound. The characteristic temperature ${\mathit{T}}^{\mathrm{*}}$ where M is independent of applied field is about 84.2 K. Low-field magnetization measurements show ${\mathit{H}}_{\mathit{c}1}$=0 at ${\mathit{T}}_{\mathit{s}}$=86.5 K while the mean-field transition temperature ${\mathit{T}}_{\mathit{c}0}$=88.8 K. The experimental results strongly suggest the Tl compound is Josephson-coupled between superconducting layers, and the spontaneous excitations are thus the wandering vortex lines rather than pancakes. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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