Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2012-01-11
Physics
Condensed Matter
Strongly Correlated Electrons
Submitted to special issue of Physica C, "Stripes and Electronic Liquid Crystals in Strongly Correlated Systems."
Scientific paper
Several non-cuprates layered transition-metal oxides exhibit clear evidence for stripe ordering of charges and magnetic moments. Therefore, stripe order should be considered as the typical consequence of doping a Mott insulator, but only in cuprates stripe order or fluctuating stripes coexist with metallic properties. A linear relationship between the charge concentration and the incommensurate structural and magnetic modulations can be considered as the finger print of stripe ordering with localized degrees of freedom. In nickelates and in cobaltates with K2NiF4 structure, doping suppresses the nearest-neighbor antiferromagnetism and induces stripe order. The higher amount of doping needed to induce stripe phases in these non-cuprates series can be attributed to reduced charge mobility. Also manganites exhibit clear evidence for stripe phases with further enhanced complexity, because orbital degrees of freedom are involved. Orbital ordering is the key element of stripe order in manganites since it is associated with the strongest structural distortion and with the perfectly fulfilled relation between doping and incommensurability. Magnetic excitations in insulating stripe phases exhibit strong similarity with those in the cuprates, but only for sufficiently short magnetic correlation lengths reflecting well-defined magnetic stripes that are only loosely coupled.
Braden Markus
Ulbrich Holger
No associations
LandOfFree
Neutron scattering studies on stripe phases in non-cuprate materials 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 Neutron scattering studies on stripe phases in non-cuprate materials, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Neutron scattering studies on stripe phases in non-cuprate materials will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-604555