Mechanism of the Verwey transition in magnetite

Details Mechanism of the Verwey transition in magnetite Mechanism of the Verwey transition in magnetite

2006-10-13

arxiv.org/abs/cond-mat/0610363v1

Phys. Rev. Lett. 97, 156402 (2006)

Physics

Condensed Matter

Strongly Correlated Electrons

5 pages, 3 figures

Scientific paper

10.1103/PhysRevLett.97.156402

By combining {\it ab initio} results for the electronic structure and phonon spectrum with the group theory, we establish the origin of the Verwey transition in Fe$_3$O$_4$. Two primary order parameters with $X_3$ and $\Delta_5$ symmetries are identified. They induce the phase transformation from the high-temperature cubic to the low-temperature monoclinic structure. The on-site Coulomb interaction $U$ between 3d electrons at Fe ions plays a crucial role in this transition -- it amplifies the coupling of phonons to conduction electrons and thus opens a gap at the Fermi energy. {\it Published in Phys. Rev. Lett. {\bf 97}, 156402 (2006).}

Affiliated with

Also associated with

No associations

Rating

Mechanism of the Verwey transition in magnetite 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 Mechanism of the Verwey transition in magnetite, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mechanism of the Verwey transition in magnetite will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-664539