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Title

Giant permanent dipole moments of excitons in semiconductor nanostructures

AuthorsWarburton, Richard J.; Schulhauser, C.; Haft, Dirk; Schäflein, C.; Karrai, Khaled; García Martínez, Jorge Manuel ; Schoenfeld, W. V.; Petroff, Pierre M.
Issue Date15-Feb-2002
PublisherAmerican Physical Society
CitationPhysical Review B 65(11): 113303 (2002)
AbstractWe have measured the vertical Stark effect of excitons confined to individual self-assembled ring-shaped quantum dots. We find that the excitons have very large permanent dipole moments corresponding to electron-hole separations up to 2.5 nm, comparable to the nanostructures’ physical height. We find a trend of both permanent dipole moment and polarizability on the emission energy, but a very strong correlation between the permanent dipole moment and the polarizability.
Description4 páginas, 4 figuras.-- PACS number(s): 78.67.Bf, 73.21.2b, 73.40.Rw, 78.66.Fd.-- Trabajo presentado en la 10th International Conference on Modulated Semiconductor structure (MSS10), Linz (2001).
Publisher version (URL)http://link.aps.org/doi/10.1103/PhysRevB.65.113303
URIhttp://hdl.handle.net/10261/29077
DOI10.1103/PhysRevB.65.113303
ISSN1098-0121
Appears in Collections:(IMN-CNM) Artículos
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