Quantum Flexoelectricity in Low Dimensional Systems

Details Quantum Flexoelectricity in Low Dimensional Systems Quantum Flexoelectricity in Low Dimensional Systems

2007-07-26

arxiv.org/abs/0707.3971v1

Physics

Condensed Matter

Materials Science

15 pages, 3 figures

Scientific paper

10.1103/PhysRevB.77.033403

Symmetry breaking at surfaces and interfaces and the capability to support large strain gradients in nanoscale systems enable new forms of electromechanical coupling. Here we introduce the concept of quantum flexoelectricity, a phenomenon that is manifested when the mechanical deformation of non-polar quantum systems results in the emergence of net dipole moments and hence linear electromechanical coupling proportional to local curvature. The concept is illustrated in carbon systems, including polyacetylene and nano graphitic ribbons. Using density functional theory calculations for systems made of up to 400 atoms, we determine the flexoelectric coefficients to be of the order of ~ 0.1 e, in agreement with the prediction of linear theory. The implications of quantum flexoelectricity on electromechanical device applications, and physics of carbon based materials are discussed.

Affiliated with

Also associated with

No associations

Rating

Quantum Flexoelectricity in Low Dimensional Systems 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 Quantum Flexoelectricity in Low Dimensional Systems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Quantum Flexoelectricity in Low Dimensional Systems will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-41039