Theory of electric polarization induced by inhomogeneity in crystals

Details Theory of electric polarization induced by inhomogeneity in crystals Theory of electric polarization induced by inhomogeneity in crystals

2007-11-12

arxiv.org/abs/0711.1855v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

We develop a general theory of electric polarization induced by inhomogeneity in crystals. We show that contributions to polarization can be classified in powers of the gradient of the order parameter. The zeroth order contribution reduces to the well-known result obtained by King-Smith and Vanderbilt for uniform systems. The first order contribution, when expressed in a two-point formula, takes the Chern-Simons 3-form of the vector potentials derived from the Bloch wave functions. Using the relation between polarization and charge density, we demonstrate our formula by studying charge fractionalization in a two-dimensional dimer model recently proposed.

Affiliated with

Also associated with

No associations

Rating

Theory of electric polarization induced by inhomogeneity in crystals 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 Theory of electric polarization induced by inhomogeneity in crystals, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Theory of electric polarization induced by inhomogeneity in crystals will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-269640