Ratchet Effects Induced by Terahertz Radiation in Heterostructures with a Lateral Periodic Potential

Olbrich, P. and Ivchenko, E. L. and Ravash, R. and Feil, T. and Danilov, S. D. and Allerdings, J. and Weiss, D. and Schuh, D. and Wegscheider, W. and Ganichev, S. D. (2009) Ratchet Effects Induced by Terahertz Radiation in Heterostructures with a Lateral Periodic Potential. PHYSICAL REVIEW LETTERS, 103 (9): 090603. ISSN 0031-9007,

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Abstract

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 polarization-independent current due to the Seebeck ratchet effect, we observe a photon helicity dependent response and propose a microscopic mechanism to interpret the experimental findings.

Item Type: Article
Uncontrolled Keywords: BROWNIAN MOTORS;
Subjects: 500 Science > 530 Physics
Divisions: Physics > Institute of Experimental and Applied Physics > Professor Ganichev > Group Sergey Ganichev
Physics > Institute of Experimental and Applied Physics > Alumni or Retired Professors > Group Werner Wegscheider
Physics > Institute of Experimental and Applied Physics > Chair Professor Weiss > Group Dieter Weiss
Depositing User: Dr. Gernot Deinzer
Date Deposited: 09 Sep 2020 09:07
Last Modified: 09 Sep 2020 09:07
URI: https://pred.uni-regensburg.de/id/eprint/28560

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