Title of article
Wave vector dispersion of excitations of the two-dimensional electron gas from light scattering using a grating coupler
Author/Authors
C. Kristukat، نويسنده , , A.R. Go?i، نويسنده , , P. Grambow، نويسنده , , K. Eberl، نويسنده , , C. Thomsen، نويسنده ,
Issue Information
دوهفته نامه با شماره پیاپی سال 2002
Pages
4
From page
341
To page
344
Abstract
We determined the wave vector dispersion of elementary excitations of the two-dimensional electron gas (2DEG) like plasmons and intersubband excitations of the charge (CDE) and spin density (SDE) by inelastic light scattering using a grating coupler. The 2DEG forms in a modulation-doped AlGaAs/GaAs single quantum well sample on top of which we evaporated a metallic grating. In this way, in backscattering geometry with incident light perpendicular to the plane of the 2DEG, light can couple to elementary excitations with finite wave vectors in the range from 104 to View the MathML source.
Keywords
2D electron gas , Wave vector dispersion , Light scattering , Single quantum well
Journal title
Physica E Low-dimensional Systems and Nanostructures
Serial Year
2002
Journal title
Physica E Low-dimensional Systems and Nanostructures
Record number
1050316
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