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Resonant Tunnelling through InAs Quantum Dots in Tilted Magnetic Fields: Experimental Determination of the g‐Factor Anisotropy
Author(s) -
Meyer J.M.,
HapkeWurst I.,
Zeitler U.,
Haug R.J.,
Pierz K.
Publication year - 2001
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/(sici)1521-3951(200104)224:3<685::aid-pssb685>3.0.co;2-y
Subject(s) - quantum tunnelling , condensed matter physics , quantum dot , anisotropy , magnetic field , field (mathematics) , physics , g factor , quantum mechanics , mathematics , pure mathematics
We have determined the Landé factor g * in self‐organized InAs quantum dots using resonant‐tunnelling experiments. With the magnetic field applied parallel to the growth direction z we find g * ∥ = 0.74 for the specific dot investigated. When the magnetic field is tilted away by ϑ from the growth axis, g * gradually increases up to a value g * ⟂ = 0.92 when B ⟂ z . Its angular dependence is found to follow the phenomenological behaviour $g\ast (\vartheta ) = \sqrt { (g\ast _\parallel \cos \vartheta )^2 + (g\ast _\perp \sin \vartheta )^2 }$ .