High-frequency hydrodynamics and Thomas-Fermi theory
Author(s)
Dobson, JF
Le, HM
Griffith University Author(s)
Year published
2000
Metadata
Show full item recordAbstract
We discuss a new form of high-frequency hydrodynamics suitable for plasmon calculations in inhomogeneous systems. The theory naturally ensures the use of low- and high-frequency pressure coefficients in the appropriate limits: in particular it correctly brings in the low-frequency coefficient for rigid Kohn motion of parabolically confined systems. As an example we obtain both the Kohn mode and the correctly spaced standing plasmons of a parabolic quantum well. This is achieved starting from a smooth inhomogeneous self-consistent Thomas-Fermi groundstate density for the parabolic well. As a result neither arbitrary boundary ...
View more >We discuss a new form of high-frequency hydrodynamics suitable for plasmon calculations in inhomogeneous systems. The theory naturally ensures the use of low- and high-frequency pressure coefficients in the appropriate limits: in particular it correctly brings in the low-frequency coefficient for rigid Kohn motion of parabolically confined systems. As an example we obtain both the Kohn mode and the correctly spaced standing plasmons of a parabolic quantum well. This is achieved starting from a smooth inhomogeneous self-consistent Thomas-Fermi groundstate density for the parabolic well. As a result neither arbitrary boundary conditions nor special system-specific assumptions are required for the hydrodynamic description.
View less >
View more >We discuss a new form of high-frequency hydrodynamics suitable for plasmon calculations in inhomogeneous systems. The theory naturally ensures the use of low- and high-frequency pressure coefficients in the appropriate limits: in particular it correctly brings in the low-frequency coefficient for rigid Kohn motion of parabolically confined systems. As an example we obtain both the Kohn mode and the correctly spaced standing plasmons of a parabolic quantum well. This is achieved starting from a smooth inhomogeneous self-consistent Thomas-Fermi groundstate density for the parabolic well. As a result neither arbitrary boundary conditions nor special system-specific assumptions are required for the hydrodynamic description.
View less >
Journal Title
Journal of Molecular Structure: Theochem
Volume
501-502
Copyright Statement
© 2000 Elsevier : Reproduced in accordance with the copyright policy of the publisher : This journal is available online - use hypertext links.
Subject
Physical chemistry
Theoretical and computational chemistry
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