Polarization as a Berry Phase |
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Authors: | R. Resta |
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Affiliation: | (1) Dipartimento di Fisica Teorica, Università di Trieste, Germany |
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Abstract: | The macroscopic polarization of a crystalline dielectric is best defined as a Berry phase of the electronic Bloch wavefunctions, a feature that is best exemplified by the spontaneous polarization of a ferroelectric crystal for which a microscopic theory was previously unavailable. |
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