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Photon-drag effect in a two-dimensional electron gas in high magnetic fields |
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| Institution: | 1. Department of Chemistry, University of Illinois Urbana-Champaign, Urbana, IL 61801, USA;2. Materials Research Laboratory, University of Illinois Urbana-Champaign, Urbana, IL 61801, USA;3. Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Urbana, IL 61801, USA;4. Department of Physics, University of Illinois Urbana-Champaign, Urbana, IL 61801, USA |
| Abstract: | We present the first measurements concerning the photon drag effect in a two-dimensional electron gas based on intersubband transitions in high magnetic fields. It is shown that the excitation mechanism of the drag voltage in a magnetic field differs obviously from the case of zero magnetic field. The longitudinal as well as the Hall drag voltage show strong oscillations around zero when the magnetic field is swept. Both consist of a B-symmetrical and an antisymmetrical part with the same periodicity in B as the magnetoresistanceRxx. The drag voltage oscillations are strongly correlated to the relative position of Fermi energy and Landau levels and are independent of the photon energy in the range of usable laser lines. |
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