Soft phonon mode in the high-superconductor Tl-Ba-Ca-Cu-O
- 1 April 1989
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 39 (10) , 7336-7338
- https://doi.org/10.1103/physrevb.39.7336
Abstract
Thermal diffuse scattering due to a transverse phonon (e∥[010]) propagating along the [100] direction was found in electron-diffraction patterns of Tl-Ba-Ca-Cu-O with of 117 K. The scattering has an intensity maximum at the middle between two fundamental spots along the 〈100〉 directions and its intensity increases with decreasing temperature. That is, the Tl oxide with high exhibits the soft-phonon behavior.
Keywords
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