Frequency scaling of photo-induced tunneling

Details Frequency scaling of photo-induced tunneling Frequency scaling of photo-induced tunneling

1999-09-06

arxiv.org/abs/cond-mat/9909084v1

Europhysics Letters 48, 66-72 (1999)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

7 pages, EURO-TeX, 3 figures, to appear in Europhysics Letters

Scientific paper

10.1209/epl/i1999-00115-8

The DC current-voltage characteristics, induced by a driving electric field with frequency Omega, of a one dimensional electron channel with a tunnel barrier is calculated. Electron-electron interaction of finite-range is taken into account. For intermediate interaction strengths, the non-linear differential conductance shows cusp-like minima at bias voltages integer multiples of hbar Omega / e that are a consequence of the finite non-zero range of the interaction but are independent of the shape of the driving electric field. However, the frequency-scaling of the photo-induced current shows a cross-over between Omega^{-1} and Omega^{-2}, and depends on the spatial shape of the driving field and the range of the interaction.

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