Dual nature of improper ferroelectricity in a magnetoelectric multiferroic

Details Dual nature of improper ferroelectricity in a magnetoelectric multiferroic Dual nature of improper ferroelectricity in a magnetoelectric multiferroic

2007-04-26

arxiv.org/abs/0704.3578v2

Physics

Condensed Matter

Materials Science

6 pages, 4 figures. Submitted for publication

Scientific paper

10.1103/PhysRevLett.99.227201

Using first principles calculations, we study the microscopic origin of ferroelectricity (FE) induced by magnetic order in the orthorhombic HoMnO3. We obtain the largest ferroelectric polarization observed in the whole class of improper magnetic ferroelectrics to date. We find that the two proposed mechanisms for FE in multiferroics, lattice- and electronic-based, are simultaneously active in this compound: a large portion of the ferroelectric polarization arises due to quantum-mechanical effects of electron orbital polarization, in addition to the conventional polar atomic displacements. An interesting mechanism for switching the magnetoelectric domains by an electric field via a 180-degree coherent rotation of Mn spins is also proposed.

Affiliated with

Also associated with

No associations

Rating

Dual nature of improper ferroelectricity in a magnetoelectric multiferroic 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 Dual nature of improper ferroelectricity in a magnetoelectric multiferroic, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dual nature of improper ferroelectricity in a magnetoelectric multiferroic will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-373329