Topological nature of polarization and charge pumping in ferroelectrics

Details Topological nature of polarization and charge pumping in ferroelectrics Topological nature of polarization and charge pumping in ferroelectrics

2004-03-21

arxiv.org/abs/cond-mat/0403532v2

Physical Review Letters 93, 167602 (2004)

Physics

Condensed Matter

Materials Science

5 pages including 4 figures

Scientific paper

10.1103/PhysRevLett.93.167602

Electric polarization or transferred charge due to an adiabatic change of external parameters $\vec{Q}$ is expressed in terms of a vector field defined in the $\vec{Q}$ space. This vector field is characterized by strings, i.e., trajectories of band-crossing points. In particular, the transverse component is given by the Biot-Savart law in a nonlocal way. For a cyclic change of $\vec{Q}$ along a loop C, the linking number between this string and C represents the amount of the pumped charge, which is quantized to be an integer as discussed by Thouless.

Affiliated with

Also associated with

No associations

Rating

Topological nature of polarization and charge pumping in ferroelectrics 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 Topological nature of polarization and charge pumping in ferroelectrics, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Topological nature of polarization and charge pumping in ferroelectrics will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-415330