Mesoscopic transport in ultrathin films of La$_{0.67}$Ca$_{0.33}$MnO$_3$

Details Mesoscopic transport in ultrathin films of La$_{0.67}$Ca$_{0.33}$MnO$_3$ Mesoscopic transport in ultrathin films of La$_{0.67}$Ca$_{0.33}$MnO$_3$

2010-09-07

arxiv.org/abs/1009.1386v1

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 5 figures

Scientific paper

We investigate the electrical transport in mesoscopic structures of La$_{0.67}$Ca$_{0.33}$MnO$_3$ in the regime of the metal-insulator transition by fabricating microbridges from strained and unstrained thin films. We measure current-voltage characteristics as function of temperature and in high magnetic fields and with varying film thickness. For strained films, in warming from the metallic to the insulating state, we find non-linear effects in the steep part of the transition characterized by a differential resistance with a strong peak around zero applied current, and saturating at higher currents after resistance drops up to 60 %. We propose that this nonlinear behavior is associated with melting of the insulating state by injecting charge carriers, signalling the occurrence of an intervening phase which involves the formation of short range polaron correlations.

Affiliated with

Also associated with

No associations

Rating

Mesoscopic transport in ultrathin films of La$_{0.67}$Ca$_{0.33}$MnO$_3$ 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 Mesoscopic transport in ultrathin films of La$_{0.67}$Ca$_{0.33}$MnO$_3$, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mesoscopic transport in ultrathin films of La$_{0.67}$Ca$_{0.33}$MnO$_3$ will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-31279