| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1820320 | Physica C: Superconductivity and its Applications | 2006 | 4 Pages |
Abstract
We report infrared reflectivity spectra for a new correlated cupric oxide system Sr2Cu(Re0.69Ca0.31)Oy with y ∼ 0.6 at several temperatures ranging between 8 and 380 K. The reflectivity spectrum at 300 K comprises of several optical phonons. A couple of residual bands located around 315 and 653 cm−1 exhibit exceptionally large intensity as compared to the other ones. The overall reflectivity spectrum lifts up slightly with increasing temperature. The energy and damping factor of transverse-optical phonons are determined by fitting the imaginary dielectric constant ε2 by Lorentz oscillator model and discussed as a function of temperature in terms of lattice anharmonicity.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
J. Ahmad, M. Shizuya, M. Isobe, S. Alam, H. Uwe,