Record number :
1260353
Title of article :
Optical tuning of Berry phase effect in topological insulators
Author/Authors :
Jun-ichi Inoue، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2011
Pages :
4
From page :
482
To page :
485
Abstract :
We theoretically discuss the influence of driving laser field on the topological nature, one of the manifestation of the electron Berry phase effect, in two-dimensional electronic systems. Adiabatic change of the laser amplitude with circular polarization alters the “order parameter”, termed the Chern number, in topological insulator with broken time-reversal symmetry, resulting in photo-induced phase transition. The finding is an optical analog of the integer quantum Hall effect, that is triggered by the laser field instead of magnetic field. This parallelism suggests the similarity of effects to electron dynamics between circularly polarized light and magnetic field.
Keywords :
Electron Berry phase , Adiabatic change , Topological insulator
Journal title :
Journal of Luminescence
Link To Document :