Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2008-10-20
PHYSICAL REVIEW B 79, 094406 (2009)
Physics
Condensed Matter
Strongly Correlated Electrons
9 figures
Scientific paper
10.1103/PhysRevB.79.094406
Dc and ac transport properties as well as electric modulus spectra have been investigated for the samples LaMn$_{1-x}$Fe$_{x}$O$_3$ with compositions 0 $\leq x \leq$ 1.0. The bulk dc resistivity shows a temperature variation consistent with the variable range hopping mechanism at low temperature and Arrhenius mechanism at high temperatures. The ac conductivity has been found to follow a power law behavior at a limited temperature and frequency region where Anderson-localization plays a significant role in the transport mechanism for all the compositions. At low temperatures large dc resistivities and dielectric relaxation behavior for all the compositions are consistent with the polaronic nature of the charge carriers. Scaling of the modulus spectra shows that the charge transport dynamics is independent of temperature for a particular composition but depends strongly on different compositions possibly due to different charge carrier concentrations and structural properties.
Giri Santanab
Karmakar Arindam
Majumdar Satya
No associations
LandOfFree
Polaron relaxation and hopping conductivity in LaMn$_{1-x}$Fe$_{x}$O$_3$ does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Polaron relaxation and hopping conductivity in LaMn$_{1-x}$Fe$_{x}$O$_3$, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polaron relaxation and hopping conductivity in LaMn$_{1-x}$Fe$_{x}$O$_3$ will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-265456