Piezoelectricity: Quantized charge transport driven by adiabatic deformations

J. E. Avron, J. Berger, Y. Last

Research output: Contribution to journalArticlepeer-review

11 Scopus citations


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.

Original languageAmerican English
Pages (from-to)511-514
Number of pages4
JournalPhysical Review Letters
Issue number3
StatePublished - 20 Jan 1997
Externally publishedYes


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