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Get Free AccessWe 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.
Rajeev Gupta, G. Venketeswara Pai, A. K. Sood, T. V. Ramakrishnan, Cnr Rao (2002). Raman scattering in charge-ordered Pr<sub>0.63</sub>Ca<sub>0.37</sub>MnO<sub>3</sub>: Anomalous temperature dependence of linewidth. EPL (Europhysics Letters), 58(5), pp. 778-784, DOI: 10.1209/epl/i2002-00417-3.
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Type
Article
Year
2002
Authors
5
Datasets
0
Total Files
0
Language
English
Journal
EPL (Europhysics Letters)
DOI
10.1209/epl/i2002-00417-3
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