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Electronic subband structure in two-dimensional electron gases under intense laser radiations

Conference Paper


Abstract


  • We present a theoretical study on the influence of intense terahertz (THz) electromagnetic (EM) radiations on the electronic structures in a modulation-doped two-dimensional (2D) semiconductor system. We find that in the presence of a THz EM radiation field polarised linearly along the 2D-plane of a 2D electron gas (2DEG), the electron density of states will be modified strongly by the intensity and the frequency of the radiation field. As a consequence, the Fermi-energy and the electron density in the system will be affected markedly by the EM radiations. The results have indicated that the photonmodified electronic subband structure in a 2DEG device can be observed by using the recently developed free-electron laser sources. © 1998 Elsevier Science B.V. All rights reserved.

Publication Date


  • 1998

Citation


  • Xu, W., & Zhang, C. (1998). Electronic subband structure in two-dimensional electron gases under intense laser radiations. In Physica E: Low-Dimensional Systems and Nanostructures Vol. 2 (pp. 252-255). doi:10.1016/S1386-9477(98)00053-8

Scopus Eid


  • 2-s2.0-0348199637

Start Page


  • 252

End Page


  • 255

Volume


  • 2

Issue


  • 1-4

Abstract


  • We present a theoretical study on the influence of intense terahertz (THz) electromagnetic (EM) radiations on the electronic structures in a modulation-doped two-dimensional (2D) semiconductor system. We find that in the presence of a THz EM radiation field polarised linearly along the 2D-plane of a 2D electron gas (2DEG), the electron density of states will be modified strongly by the intensity and the frequency of the radiation field. As a consequence, the Fermi-energy and the electron density in the system will be affected markedly by the EM radiations. The results have indicated that the photonmodified electronic subband structure in a 2DEG device can be observed by using the recently developed free-electron laser sources. © 1998 Elsevier Science B.V. All rights reserved.

Publication Date


  • 1998

Citation


  • Xu, W., & Zhang, C. (1998). Electronic subband structure in two-dimensional electron gases under intense laser radiations. In Physica E: Low-Dimensional Systems and Nanostructures Vol. 2 (pp. 252-255). doi:10.1016/S1386-9477(98)00053-8

Scopus Eid


  • 2-s2.0-0348199637

Start Page


  • 252

End Page


  • 255

Volume


  • 2

Issue


  • 1-4