Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2004-11-05
physical review B 74 (22/12/2006) 235115
Physics
Condensed Matter
Strongly Correlated Electrons
8 octobre 2004
Scientific paper
We studied the effects of the incommensurate structural modulations on the ladder subsystem of the $Sr\_{14-x}Ca\_{x}Cu\_{24}O\_{41}$ family of compounds using ab-initio explicitly-correlated calculations. From these calculations we derived $t-J$ model as a function of the fourth crystallographic coordinate $\tau$ describing the incommensurate modulations. It was found that in the highly calcium-doped system, the on-site orbital energies are strongly modulated along the ladder legs. On the contrary the two sites of the ladder rungs are iso-energetic and the holes are thus expected to be delocalized on the rungs. Chain-ladder interactions were also evaluated and found to be very negligible. The ladder superconductivity model for these systems is discussed in the light of the present results.
Gellé Alain
Lepetit Marie-Bernadette
No associations
LandOfFree
Influence of the structural modulations and the Chain-ladder interaction in the $Sr\_{14-x}Ca\_{x}Cu\_{24}O\_{41}$ compounds 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 Influence of the structural modulations and the Chain-ladder interaction in the $Sr\_{14-x}Ca\_{x}Cu\_{24}O\_{41}$ compounds, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Influence of the structural modulations and the Chain-ladder interaction in the $Sr\_{14-x}Ca\_{x}Cu\_{24}O\_{41}$ compounds will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-497873