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Absorption of electromagnetic waves in two-dimensional systems under a magnetic field and a periodic potential

Journal Article


Abstract


  • The interaction of an electromagnetic wave with a two-dimensional electron gas subjected to a magnetic field and a weak periodic potential is investigated. The electron-impurity interaction is included to the lowest order. The periodic modulation of the Landau states has a profound effect on the optical conductivity. Simultaneous excitation of an electron-hole pair contributes significantly to the absorption around and below the cyclotron frequency. This is in contrast to a uniform electron gas under a perpendicular magnetic field where electron-hole pair excitations are absent.

Publication Date


  • 1997

Citation


  • Brataas, A., Zhang, C., & Chao, K. A. (1997). Absorption of electromagnetic waves in two-dimensional systems under a magnetic field and a periodic potential. Journal of Physics Condensed Matter, 9(49). doi:10.1088/0953-8984/9/49/002

Scopus Eid


  • 2-s2.0-0031560374

Volume


  • 9

Issue


  • 49

Abstract


  • The interaction of an electromagnetic wave with a two-dimensional electron gas subjected to a magnetic field and a weak periodic potential is investigated. The electron-impurity interaction is included to the lowest order. The periodic modulation of the Landau states has a profound effect on the optical conductivity. Simultaneous excitation of an electron-hole pair contributes significantly to the absorption around and below the cyclotron frequency. This is in contrast to a uniform electron gas under a perpendicular magnetic field where electron-hole pair excitations are absent.

Publication Date


  • 1997

Citation


  • Brataas, A., Zhang, C., & Chao, K. A. (1997). Absorption of electromagnetic waves in two-dimensional systems under a magnetic field and a periodic potential. Journal of Physics Condensed Matter, 9(49). doi:10.1088/0953-8984/9/49/002

Scopus Eid


  • 2-s2.0-0031560374

Volume


  • 9

Issue


  • 49