Many-body coupling between quasiparticle and collective excitations in semiconductor quantum wells
Journal Article
·
· Physical Review, B: Condensed Matter; (United States)
- Joint Program for Advanced Electronic Materials, Department of Physics, University of Maryland, College Park, Maryland 20742 (United States)
We predict that, due to a many-body coupling between collective and single-particle excitations, there is an experimentally observable resonant line splitting in the intersubband collective charge-density excitation spectra in wide semiconductor quantum wells at low electron densities. This many-body coupling causes even the long-wavelength intersubband plasmon mode to be Landau damped at a critical density. Above the critical density, the intersubband plasmon mode lies [ital lower] in energy than the single-particle excitation.
- OSTI ID:
- 6380702
- Journal Information:
- Physical Review, B: Condensed Matter; (United States), Vol. 47:24; ISSN 0163-1829
- Country of Publication:
- United States
- Language:
- English
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