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Magnetotunneling into Fock–Darwin‐like quantum dot states: Lateral matrix elements and the role of selection rules
Author(s) -
Kießlich Gerold
Publication year - 2010
Publication title -
physica status solidi (rrl) – rapid research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.786
H-Index - 68
eISSN - 1862-6270
pISSN - 1862-6254
DOI - 10.1002/pssr.201004136
Subject(s) - quantum tunnelling , quantum dot , fock space , wave function , angular momentum , darwin (adl) , physics , matrix (chemical analysis) , condensed matter physics , quantum mechanics , chemistry , systems engineering , chromatography , engineering
We study theoretically the magnetotunneling transport through quantum dots formed by thermal diffusion of charged manganese interstitials in the vicinity of a GaAs quantum well [Phys. Rev. Lett. 101 , 226807 (2008)]. In particular, we examine the lateral matrix elements between Landau subbands in the contact and Fock–Darwin‐like states of an individual dot at high magnetic fields. We explicitly demonstrate the effect of spatial deformation of the dot on the wave function's overlap. The comparison with measured data suggests a selection rule similar to angular momentum conservation for tunneling into perfect Fock–Darwin states. (© 2010 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)