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Classical ratchet effects in heterostructures with a lateral periodic potential

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Olbrich, Peter ; Karch, Johannes ; Ivchenko, Eougenious ; Kamann, Josef ; März, Benjamin ; Fehrenbacher, Markus ; Weiss, Dieter ; Ganichev, Sergey
Date of publication of this fulltext: 29 Feb 2012 08:48


We study terahertz radiation induced ratchet currents in low dimensional semiconductor structures with a superimposed one-dimensional lateral periodic potential. The periodic potential is produced by etching a grating into the sample surface or depositing metal stripes periodically on the sample top. Microscopically, the photocurrent generation is based on the combined action of the lateral ...


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