| Autor: |
Aliev, M.K., Alimov, G.R., Kholbaev, I., Leonyuk, L.I., Muminov, T.M., Olimov, B.A., Rumi, R.F., Turkmenov, H.I. |
| Zdroj: |
Journal of Low Temperature Physics; December 1999, Vol. 117 Issue: 5-6 p1105-1109, 5p |
| Abstrakt: |
The microwave absorption R in the Y1Ba2Cu3O7–xsingle crystals was investigated near Tc≈92K and in the external magnetic field0 < H ≤9kOe. A modified ESR spectrometer was used in the experiment. The method of temperature modulation, along with the usual method of magnetic-field modulation, was first applied in studying of the microwave response of these crystals. Peaks in the temperature dependencies of the signals ∂R/∂H and ∂R/∂T observed in the vicinity of Tcwere differently shaped and shifted one with respect to another. The evolution of the peaks with variation of the magnetic field and angle θ betweenHand thec-axis was traced. It has been shown that the observed difference of the temperature dependencies of the derivatives ∂R/∂H and ∂R/∂T occurs due to the field-induced broadening of the superconducting transition, which is inherent in the high-Tcsuperconductors. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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