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http://hdl.handle.net/2445/10457
Title: | Far-infrared edge modes in quantum dots |
Author: | Lipparini, Enrico Barberán Falcón, Núria Barranco Gómez, Manuel Pi Pericay, Martí Serra, Llorenç |
Keywords: | Superfícies (Física) Propietats elèctriques Electrodinàmica quàntica Surfaces (Physics) Electric properties Quantum electrodynamics |
Issue Date: | 1997 |
Publisher: | The American Physical Society |
Abstract: | We have investigated edge modes of different multipolarity sustained by quantum dots submitted to external magnetic fields. We present a microscopic description based on a variational solution of the equation of motion for any axially symmetric confining potential and multipole mode. Numerical results for dots with different numbers of electrons, whose ground state is described within a local current density-functional theory, are discussed. Two sum rules, which are exact within this theory, are derived. In the limit of a large neutral dot at B = 0 , we show that the classical hydrodynamic dispersion law for edge waves ω ( q ) ∼ √ q ln ( q 0 / q ) holds when quantum and finite-size effects are taken into account. |
Note: | Reproducció digital del document publicat en format paper, proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevB.56.12375 |
It is part of: | Physical Review B, 1997, vol. 56, núm. 19, p. 12375-12385 |
URI: | http://hdl.handle.net/2445/10457 |
Related resource: | http://dx.doi.org/10.1103/PhysRevB.56.12375 |
ISSN: | 0163-1829 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
Files in This Item:
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119298.pdf | 260.98 kB | Adobe PDF | View/Open |
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