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This article is cited in 1 scientific paper (total in 1 paper)
MISCELLANEOUS
On the theory of pyro- and ferroelectrics: Dipole moment density and polarization
V. I. Belyavskiia, A. A. Gorbatsevichba a Lebedev Physical Institute, Russian Academy of Sciences, Moscow, Russia
b National Research University MIET, Moscow, Russia
Abstract:
The physical origin of the ambiguity related to the dependence of the polarization on the choice of the unit cell in a crystal is established in the framework of classical electrodynamics. It is shown that the electric polarization of a crystal is determined not only by the charge distribution in the unit cell (dipole moment density) but also by the microscopic mechanism of symmetry breaking in the polar phase. An approach to the calculation of the polarization invariant with respect to the choice of the unit cell is suggested. It is demonstrated that the dependence of the polarization on the mechanism of formation of the polar phase exists in the “modern topological theory” of polarization too.
Received: 18.01.2017
Citation:
V. I. Belyavskii, A. A. Gorbatsevich, “On the theory of pyro- and ferroelectrics: Dipole moment density and polarization”, Pis'ma v Zh. Èksper. Teoret. Fiz., 105:7 (2017), 455–463; JETP Letters, 105:7 (2017), 464–472
Linking options:
https://www.mathnet.ru/eng/jetpl5236 https://www.mathnet.ru/eng/jetpl/v105/i7/p455
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