Orbital Bi-Stripes in High Doped Bilayer Manganites

Details Orbital Bi-Stripes in High Doped Bilayer Manganites Orbital Bi-Stripes in High Doped Bilayer Manganites

2004-12-16

arxiv.org/abs/cond-mat/0412445v1

Physics

Condensed Matter

Strongly Correlated Electrons

8 pages, 9 figures

Scientific paper

10.1103/PhysRevB.72.064432

We present high resolution high energy and resonant x-ray diffraction results from La2-2xSr1+2xMn2O7 for x=0.55,0.575 and 0.60. These compounds show superlattice reflections at wavevectors of (h+-\delta,k+-\delta,l) and (h+-2\delta,k+-2\delta,l), arising from orbital ordering with associated Jahn-Teller distortions and charge ordering respectively. We observe a phase transition between the x=0.55 and x=0.575 doping levels. Samples with x=0.55 display structural characteristics similar to those previously reported for x=0.5. Compared to this, the long range order in samples with x=0.55 and x=0.6 have a distinct change in wavevector and correlation. We attribute this to a new orbital bi-stripe phase, accompanied by weak, frustrated, charge ordering. The observed azimuthal dependence of the orbital order reflections supports the model proposed for this new phase.

Affiliated with

Also associated with

No associations

Rating

Orbital Bi-Stripes in High Doped Bilayer 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 Orbital Bi-Stripes in High Doped Bilayer Manganites, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Orbital Bi-Stripes in High Doped Bilayer Manganites will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-628402