Polarization as a Berry Phase
نویسندگان
چکیده
منابع مشابه
Dynamics of Berry-phase polarization in time-dependent electric fields
We consider the flow of polarization current J5dP/dt produced by a homogeneous electric field E(t) or by rapidly varying some other parameter in the Hamiltonian of a solid. For an initially insulating system and a collisionless time evolution, the dynamic polarization P(t) is given by a nonadiabatic version of the KingSmith–Vanderbilt geometric-phase formula. This leads to a computationally con...
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ژورنال
عنوان ژورنال: Europhysics News
سال: 1997
ISSN: 0531-7479,1432-1092
DOI: 10.1007/s00770-997-0018-4