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Ratchet effects induced by terahertz radiation in heterostructures with a lateral periodic potential

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Olbrich, Peter ; Ivchenko, Eougenious ; Ravash, Roghaiyeh ; Feil, Thomas ; Danilov, Sergey ; Allerdings, J. ; Weiss, Dieter ; Schuh, Dieter ; Wegscheider, Werner ; Ganichev, Sergey
Date of publication of this fulltext: 05 Aug 2009 13:59


We report on the observation of the Seebeck ratchet effect. The effect is measured in semiconductor heterostructures with a one-dimensional lateral potential excited by terahertz radiation. The photocurrent generation is based on the combined action of a spatially periodic in-plane potential and a spatially modulated light, which gives rise to a modulation of the local temperature. In addition to ...


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