Landau Theory of Stripe Phases in Cuprates and Nickelates

Details Landau Theory of Stripe Phases in Cuprates and Nickelates Landau Theory of Stripe Phases in Cuprates and Nickelates

1997-02-05

arxiv.org/abs/cond-mat/9702055v1

Physics

Condensed Matter

Strongly Correlated Electrons

5 pages, 1 figure, submitted to PRB

Scientific paper

10.1103/PhysRevB.57.1422

We consider a Landau theory of coupled charge and spin-density wave order parameters as a simple model for the ordering that has been observed experimentally in the La_2NiO_4 and La_2CuO_4 families of doped antiferromagnets. The period of the charge-density wave is generically half that of the spin-density wave, or equivalently the charges form antiphase domain walls in the antiferromagnetic order. A sharp distinction exists between the case in which the ordering is primarily charge driven (which produces a sequence of transitions in qualitative agreement with experiment) or spin driven (which does not). We also find that stripes with non-collinear spin order (i.e. spiral phases) are possible in a region of the phase diagram where the transition is spin driven; the spiral is circular only when there is no charge order, and is otherwise elliptical with an eccentricity proportional to the magnitude of the charge order.

Affiliated with

Also associated with

No associations

Rating

Landau Theory of Stripe Phases in Cuprates and Nickelates 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 Landau Theory of Stripe Phases in Cuprates and Nickelates, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Landau Theory of Stripe Phases in Cuprates and Nickelates will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-73652