Order and disorder in the triangular-lattice t-J-V model at 2/3 electron density

Details Order and disorder in the triangular-lattice t-J-V model at 2/3 electron density Order and disorder in the triangular-lattice t-J-V model at 2/3 electron density

2004-03-30

arxiv.org/abs/cond-mat/0403718v1

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 5 figures

Scientific paper

10.1103/PhysRevB.70.020504

Motivated by the recent discovery of superconductivity in Na$_x$CoO$_2\cdot y$H$_2$O, we use series expansion methods and cluster mean-field theory to study spontaneous charge order, Neel order, ferromagnetic order, dimer order and phase-separation in the triangular-lattice t-J-V model at 2/3 electron density. We find that for t<0, the charge ordered state, with electrons preferentially occupying a honeycomb lattice, is very robust. Quite surprisingly, hopping to the third sublattice can even enhance Neel order. At large negative t and small V, the Nagaoka ferromagnetic state is obtained. For large positive t, charge and Neel order vanish below a critical V, giving rise to an itinerant antiferromagnetically correlated state.

Affiliated with

Also associated with

No associations

Rating

Order and disorder in the triangular-lattice t-J-V model at 2/3 electron density 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 Order and disorder in the triangular-lattice t-J-V model at 2/3 electron density, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Order and disorder in the triangular-lattice t-J-V model at 2/3 electron density will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-78495