Volume 48, Number 1, October I 1999
|Page(s)||66 - 72|
|Section||Condensed matter: electronic structure, electrical, magnetic and optical properties|
|Published online||01 September 2002|
Frequency scaling of photo-induced tunneling
Max-Planck-Institut für Physik komplexer Systeme Nöthnitzerstraße 38, D-01187 Dresden, Germany
2 Dipartimento di Fisica, INFM, Università di Genova via Dodecaneso 33, I-16146 Genova, Italy
3 I. Institut für Theoretische Physik, Universität Hamburg Jungiusstraße 9, D-20355 Hamburg, Germany
Accepted: 4 August 1999
The DC current-voltage characteristics induced by a driving electric field with frequency Ω 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 (m integer) 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 and , and depends on the spatial shape of the driving field and the range of the interaction.
PACS: 71.10.Pm – Fermions in reduced dimensions (anyons, composite fermions, Luttinger liquid, etc.) / 72.20.Ht – High-field and nonlinear effects / 42.65.Ky – Harmonic generation, frequency conversion
© EDP Sciences, 1999
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