Abstract
We study a real-time current induced by strong electric field in isolated systems of interacting spinless fermions. It will be demonstrated for a generic (metallic or insulating) system at high temperature that the major nonlinear effects can be accounted by internal heating. We identify a quasi–equilibrium evolution and show that a simple extension of the linear response theory allows one to calculate the real–time current without a formal solution of the time–dependent problem. For stronger electric fields this quasi–equilibrium regime terminates and the Bloch oscillations set in. An anomalous nonlinear response of the integrable systems will also be briefly discussed. Finally we show a simple way of solving an important inverse problem: how to tune an appropriate electromagnetic pulse which in a finite quantum system induces the assumed time–dependent current?
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Acknowledgements
This work has been supported by the Program P1-0044 of the Slovenian Research Agency (ARRS) and RTN-LOTHERM project. M.M. acknowledges support from the N N202052940 project of MNiSW.
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Mierzejewski, M., Bonča, J., Prelovšek, P. (2013). Inducing Current in One Dimensional Systems of Interacting Fermions. In: Zlatic, V., Hewson, A. (eds) New Materials for Thermoelectric Applications: Theory and Experiment. NATO Science for Peace and Security Series B: Physics and Biophysics. Springer, Dordrecht. https://doi.org/10.1007/978-94-007-4984-9_14
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DOI: https://doi.org/10.1007/978-94-007-4984-9_14
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