2005/06/15 by Saket Asthana, Asthana, Saket, D. Bahadur +3
Materials Science · Physics and Astronomy · #Advanced Thermoelectric Materials and Devices #Electronic and Structural Properties of Oxides #FOS: Physical sciences #Magnetic and transport properties of perovskites and related materials #Strongly Correlated Electrons (cond-mat.str-el) #cond-mat.str-el
paper · pdf · doi:10.48550/arxiv.cond-mat/0506346
9 pages including figures, submitted in J. Appl. Phys
arxiv created 2005/06/15 · openalex publication_date 2005/06/15 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
It 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.