Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2006-03-07
Phys. Rev. B 74, 245112 (2006)
Physics
Condensed Matter
Strongly Correlated Electrons
6 pages, 6 figures, Expanded and improved, with additional references
Scientific paper
10.1103/PhysRevB.74.245112
We study a model of a stripe ordered doped antiferromagnet consisting of coupled Hubbard ladders which can be tuned from quasi-one-dimensional to two-dimensional. We solve for the magnetization and charge density on the ladders by Hartree-Fock theory and find a set of solutions with lightly doped ``spin-stripes'' which are antiferromagnetic and more heavily doped anti-phase ``charge-stripes''. Both the spin- and charge-stripes have electronic spectral weight near the Fermi energy but in different regions of the Brillouin zone; the spin-stripes in the ``nodal'' region, near (\pi/2,\pi/2), and the charge-stripes in the ``antinodal'' region, near (\pi,0). We find a striking dichotomy between nodal and antinodal states in which the nodal states are essentially delocalized and two-dimensional whereas the antinodal states are quasi-one-dimensional, localized on individual charge-stripes. For bond-centered stripes we also find an even-odd effect of the charge periodicity which could explain the non-monotonous variations with doping of the low-temperature resistivity in LSCO
No associations
LandOfFree
Nodal-antinodal dichotomy and magic doping fractions in a stripe ordered antiferromagnet 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 Nodal-antinodal dichotomy and magic doping fractions in a stripe ordered antiferromagnet, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Nodal-antinodal dichotomy and magic doping fractions in a stripe ordered antiferromagnet will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-365824