Berry’s phase for energy bands in solids

J. Zak
Phys. Rev. Lett. 62, 2747 – Published 5 June 1989
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Abstract

Berry’s phase is defined for the dynamics of electrons in periodic solids and an explicit formula is derived for it. Because of the special torus topology of the Brillouin zone a nonzero Berry phase is shown to exist in a one-dimensional parameter space. Symmetry of the Bloch functions in the Brillouin zone leads to the quantization of Berry’s phase. A connection is established between the latter and the Wyckoff positions in the crystal in the framework of band representations of space groups. Berry’s phase can therefore be used for labeling energy bands in solids.

  • Received 28 December 1988

DOI:https://doi.org/10.1103/PhysRevLett.62.2747

©1989 American Physical Society

Authors & Affiliations

J. Zak

  • Department of Physics, Technion–Israel Institute of Technology, Haifa, Israel 32000

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Issue

Vol. 62, Iss. 23 — 5 June 1989

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