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Collective intersubband excitations in p-doped GaAs-AlGaAs multiple quantum wells

Schüller, Christian, Kraus, J., Latussek, V., Schaack, G. and Ebeling, J. K. (1992) Collective intersubband excitations in p-doped GaAs-AlGaAs multiple quantum wells. Solid State Communications 81 (1), pp. 3-7.

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We report on Raman spectroscopic investigations of collective spin-density (SDW) and charge-density waves (CDW) in the two-dimensional hole gas of a p-modulation doped GaAs/AlxGa1-xAs multiple quantum-well (MQW) structure and on the consequence of Landau damping of these excitations.
From the existence of collective SDW with energies lower than the border of the single-particle continuum we derive that exchange and correlation effects are of considerable strength in such hole gases.

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Item type:Article
Date:January 1992
Institutions:Physics > Institute of Experimental and Applied Physics > Chair Professor Lupton > Group Christian Schüller
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Dewey Decimal Classification:500 Science > 530 Physics
Created at the University of Regensburg:Unknown
Item ID:9649
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