Fast-particle energy loss to a quantum well

Electron energy loss spectroscopy (EELS) to a single GaAs–AlGaAs quantum well is considered for a charged particle moving parallel to the two-dimensional electron gas (2DEG) within the framework of the random-phase approximation (RPA). For the single-quantum well structure, a modulation-doped GaAs–A...

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Bibliographic Details
Published in:Physica. E, Low-dimensional systems & nanostructures Low-dimensional systems & nanostructures, 2000-09, Vol.8 (3), p.248-253
Main Authors: Park, Tae-ik, Gumbs, Godfrey, Kushwaha, M.S.
Format: Article
Language:English
Subjects:
Electron energy loss spectroscopy
Quantum wells
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Summary:Electron energy loss spectroscopy (EELS) to a single GaAs–AlGaAs quantum well is considered for a charged particle moving parallel to the two-dimensional electron gas (2DEG) within the framework of the random-phase approximation (RPA). For the single-quantum well structure, a modulation-doped GaAs–AlGaAs heterostructure is considered. The Schrödinger–Poisson solver is used to obtain the electron eigenstates. We present theoretical results for the electron energy loss to intersubband and intrasubband plasmons and particle–hole modes using the inverse dielectric function (IDF) formalism.
ISSN:1386-9477
1873-1759
DOI:10.1016/S1386-9477(00)00144-2