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Acoustic plasmons and indirect intersubband excitations in tunneling-coupled GaAs-AlxGa1ÀxAs double quantum wells

Bootsmann, M.-T. and Hu, C. M. and Heyn, Ch. and Heitmann, Detlef and Schüller, Christian (2003) Acoustic plasmons and indirect intersubband excitations in tunneling-coupled GaAs-AlxGa1ÀxAs double quantum wells. Physical Review B (PRB) 67; 4 , p. 121309.

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Other URL: http://link.aps.org/doi/10.1103/PhysRevB.67.121309


Abstract

In photoluminescence spectroscopy of a low-mobility two-dimensional electron gas subjected to a quantizing magnetic field, we observe an anomaly around nu= (1/3) at a very low temperature (0.1 K) and an intermediate electron density (0.9×1011 cm–2). The anomaly is explained as due to perturbation of the incompressible liquid at the Laughlin state due to close proximity of a localized charged ...

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Item Type:Article
Date:31 March 2003
Institutions:Physics > Institute of Experimental and Applied Physics > Chair Professor Lupton > Group Christian Schüller
Identification Number:
ValueType
10.1103/PhysRevB.67.121309DOI
Keywords:gallium arsenide, aluminium compounds, III-V semiconductors, semiconductor quantum wells, plasmons, light scattering, carrier density, RPA calculations
Subjects:500 Science > 530 Physics
Status:Published
Refereed:Unknown
Created at the University of Regensburg:Unknown
Owner: Martin Kaiser
Deposited On:21 Sep 2009 07:14
Last Modified:13 Mar 2014 11:01
Item ID:9494
Owner Only: item control page

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