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Effect of strong terahertz radiation on magnetoconductivity in two dimensions

Conference Paper


Abstract


  • The interaction between strong THz radiation from a free electron laser and an electron sheet in a high-mobility, low-density, GaAs/AlGaAs structure has been investigated in magnetotransport experiments over a wide range of wavelengths, intensities, magnetic fields, and temperatures. Photovoltage and photocurrent effects are evident in both longitudinal and transverse potential differences. Broad cyclotron resonance is observed to high temperature and connected with a decrease in electron density. The change in electron temperature under THz radiation is estimated from changes in the magnitude of the magnetoresistivity oscillations at low lattice temperature. The effect of the magnetic field is to suppress the rise in electron temperature relative to the zero field case.

Publication Date


  • 2002

Citation


  • Lewis, R. A., Xu, W., Koenraad, P. M., & Bradley, I. V. (2002). Effect of strong terahertz radiation on magnetoconductivity in two dimensions. In International Journal of Modern Physics B Vol. 16 (pp. 2964-2967). doi:10.1142/s0217979202013328

Scopus Eid


  • 2-s2.0-0037200490

Start Page


  • 2964

End Page


  • 2967

Volume


  • 16

Issue


  • 20-22

Abstract


  • The interaction between strong THz radiation from a free electron laser and an electron sheet in a high-mobility, low-density, GaAs/AlGaAs structure has been investigated in magnetotransport experiments over a wide range of wavelengths, intensities, magnetic fields, and temperatures. Photovoltage and photocurrent effects are evident in both longitudinal and transverse potential differences. Broad cyclotron resonance is observed to high temperature and connected with a decrease in electron density. The change in electron temperature under THz radiation is estimated from changes in the magnitude of the magnetoresistivity oscillations at low lattice temperature. The effect of the magnetic field is to suppress the rise in electron temperature relative to the zero field case.

Publication Date


  • 2002

Citation


  • Lewis, R. A., Xu, W., Koenraad, P. M., & Bradley, I. V. (2002). Effect of strong terahertz radiation on magnetoconductivity in two dimensions. In International Journal of Modern Physics B Vol. 16 (pp. 2964-2967). doi:10.1142/s0217979202013328

Scopus Eid


  • 2-s2.0-0037200490

Start Page


  • 2964

End Page


  • 2967

Volume


  • 16

Issue


  • 20-22