Direct observation of displaced phonons responsible for small polaron charge transport in (La1/3Sm2/3)0.67Ba0.33-xSrxMnO3 (x = 0.0, 0.1, 0.2 and 0.33)

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dc.creatorAsthana, Saket
dc.creatorBahadur, D.
dc.creatorSrivastava, C. M.
dc.date2005-06-15
dc.date.accessioned2026-07-25T15:52:33Z
dc.descriptionIt is shown that charge transport in substituted manganites (La1/3Sm2/3)0.67Ba0.33-xSrxMnO3 (x = 0.0, 0.1, 0.2 and 0.33) is through polarons which are formed through electron-phonon coupling whose strength determines the mobility of the charge carrier. For weak coupling the free phonon mode is only slightly affected but in strong coupling the free phonon mode disappears and "displaced" phonon modes appear. This is seen directly in IR-spectra.
dc.description9 pages including figures, submitted in J. Appl. Phys
dc.identifierhttps://arxiv.org/abs/cond-mat/0506346
dc.identifierhttp://arxiv.org/abs/cond-mat/0506346
dc.identifier.urihttps://dspace.dare.co.zw/handle/123456789/37717
dc.subjectStrongly Correlated Electrons
dc.titleDirect observation of displaced phonons responsible for small polaron charge transport in (La1/3Sm2/3)0.67Ba0.33-xSrxMnO3 (x = 0.0, 0.1, 0.2 and 0.33)
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