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Published January 20, 1997 | Published + Accepted Version
Journal Article Open

Piezoelectricity: Quantized Charge Transport Driven by Adiabatic Deformations

Abstract

We study the (zero temperature) quantum piezoelectric response of Harper-like models with broken inversion symmetry. The charge transport in these models is related to topological invariants (Chern numbers). We show that there are arbitrarily small periodic modulations of the atomic positions that lead to nonzero charge transport.

Additional Information

© 1997 American Physical Society. (Received 17 September 1996) We thank A. Auerbach and P. Zograf for discussions. We also thank E. Akkermans and J. Zak for bringing Refs. [6], [1], and [13] to our attention. This work is supported in part by GIF, the Israel Science Foundation, the DFG, and the Fund for the Promotion of Research at the Technion. Y.L. acknowledges the hospitality of ITP at the Technion and J. A. the hospitality of Caltech.

Attached Files

Published - PhysRevLett.78.511.pdf

Accepted Version - 9609227.pdf

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