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Frequency scaling of photo-induced tunneling

Gianaurelio Cuniberti·Andrea Fechner·Maura Sassetti·Bernhard Kramer
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Abstract

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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Gianaurelio Cuniberti, Andrea Fechner, Maura Sassetti, Bernhard Kramer. 1999-09-06. Frequency scaling of photo-induced tunneling. https://doi.org/10.1209/epl%2Fi1999-00115-8

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