Olbrich, Peter and Ivchenko, Eougenious and Ravash, Roghaiyeh and Feil, Thomas and Danilov, Sergey and Allerdings, J. and Weiss, Dieter and Schuh, Dieter and Wegscheider, Werner and Ganichev, Sergey (2009) Ratchet effects induced by terahertz radiation in heterostructures with a lateral periodic potential. Physical Review Letters (PRL) 103, 090603-1-090603-4.
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 the polarizationindependent current due to the Seebeck ratchet effect, we observe a photon helicity dependent response and propose a microscopic mechanism to interpret the experimental findings.
|Date:||28 August 2009|
|Institutions:|| Physics > Institute of Experimental and Applied Physics > Chair Professor Weiss > Group Dieter Weiss|
Physics > Institute of Experimental and Applied Physics > Retired Professors > Group Werner Wegscheider
Physics > Institute of Experimental and Applied Physics > Professor Ganichev > Group Sergey Ganichev
|Projects:||SFB 689: Spinphänomene in reduzierten Dimensionen|
|Subjects:||500 Science > 530 Physics|
|Refereed:||Yes, this version has been refereed|
|Created at the University of Regensburg:||Partially|
|Deposited On:||30 Jun 2009 08:45|
|Last Modified:||20 Jul 2011 21:35|