Current-induced break of inversion symmetry in Si: optical second-harmonic generation induced by a dc current

Details Current-induced break of inversion symmetry in Si: optical second-harmonic generation induced by a dc current Current-induced break of inversion symmetry in Si: optical second-harmonic generation induced by a dc current

2007-01-28

arxiv.org/abs/physics/0701313v1

Physics

Optics

Scientific paper

The dc-current-induced optical second-harmonic generation is observed at the surface of centrosymmetric single crystal of Si. Surface dc-current with density up to $\textit{j}_{max} \sim 10^{3}$ A/cm$^{2}$ results in break of inversion symmetry of Si and induces optical second-harmonic generation with intensity that corresponds to the appearance of dipole second-order susceptibility $\chi^{(2)d}(j_{max})\sim 3 \cdot 10^{-15}$m/V.

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