Intrinsic tunneling in phase separated manganites

Details Intrinsic tunneling in phase separated manganites Intrinsic tunneling in phase separated manganites

2007-07-30

arxiv.org/abs/0707.4411v2

Physics

Condensed Matter

Strongly Correlated Electrons

changed content; accepted for publication in Physical Review Letters, 5 pages, 4 figures

Scientific paper

We present evidence of direct electron tunneling across intrinsic insulating regions in sub-micrometer wide bridges of the phase separated ferromagnet (La,Pr,Ca)MnO$_3$. Upon cooling below the Curie temperature, a predominantly ferromagnetic supercooled state persists where tunneling across the intrinsic tunnel barriers (ITBs) results in metastable, temperature-independent, high-resistance plateaus over a large range of temperatures. Upon application of a magnetic field, our data reveal that the ITBs are extinguished resulting in sharp, colossal, low-field resistance drops. Our results compare well to theoretical predictions of magnetic domain walls coinciding with the intrinsic insulating phase.

Affiliated with

Also associated with

No associations

Rating

Intrinsic tunneling in phase separated manganites 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 Intrinsic tunneling in phase separated manganites, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Intrinsic tunneling in phase separated manganites will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-359779