Probing interaction-induced ferromagnetism in optical superlattices

Details Probing interaction-induced ferromagnetism in optical superlattices Probing interaction-induced ferromagnetism in optical superlattices

2009-04-02

arxiv.org/abs/0904.0412v2

Physics

Condensed Matter

Quantum Gases

Extended and final version to appear in New J. Phys. 12 pages, 6 figures.

Scientific paper

We propose a controllable method for observing interaction induced ferromagnetism in ultracold fermionic atoms loaded in optical superlattices. We first discuss how to probe and control Nagaoka ferromagnetism in an array of isolated plaquettes (four lattice sites arranged in a square). Next, we show that introducing a weak interplaquette coupling destroys the ferromagnetic correlations. To overcome this instability we propose to mediate long-range ferromagnetic correlations among the plaquettes via double-exchange processes. Conditions for experimental realization and techniques to detect such states are discussed.

Affiliated with

Also associated with

No associations

Rating

Probing interaction-induced ferromagnetism in optical superlattices 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 Probing interaction-induced ferromagnetism in optical superlattices, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Probing interaction-induced ferromagnetism in optical superlattices will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-64110