Gupta, R. ; Venketeswara Pai, G. ; Sood, A. K. ; Ramakrishnan, T. V. ; Rao, C. N. R. (2002) Raman scattering in charge-ordered Pr0.63Ca0.37MnO3: anomalous temperature dependence of linewidth EPL: Europhysics Letters, 58 (5). pp. 778-784. ISSN 0295-5075
Full text not available from this repository.
Official URL: http://iopscience.iop.org/0295-5075/58/5/778?fromS...
Related URL: http://dx.doi.org/10.1209/epl/i2002-00417-3
Abstract
We report on the evolution of the Raman-active Ag phonon modes in the charge-ordered manganite Pr0.63Ca0.37MnO3 as a function of temperature from 300 K to 25 K. Our studies reveal that the linewidths of the Ag(2) and Ag(4) phonons increase as temperature decreases. This anomalous temperature dependence of phonon lineshapes, seen for the first time in charge-ordered manganites, can be quantitatively understood in terms of a strong spin-phonon coupling involving t2g spins and Ag phonons.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to EDP Sciences. |
| ID Code: | 44727 |
| Deposited On: | 23 Jun 2011 05:52 |
| Last Modified: | 11 Jul 2012 10:43 |
Repository Staff Only: item control page
