TITLE

Tuning the tunnel coupling of quantum dot molecules with longitudinal magnetic fields

AUTHOR(S)
Climente, J. I.
PUB. DATE
December 2008
SOURCE
Applied Physics Letters;12/1/2008, Vol. 93 Issue 22, p223109
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We show that the energy splitting between the bonding and antibonding molecular states of holes in vertically stacked quantum dots can be tuned using longitudinal magnetic fields. With increasing field, the energy splitting first decreases to zero and then to negative values, which implies a bonding-to-antibonding ground state transition. This effect is a consequence of the enhancement of the valence band spin-orbit interaction induced by the magnetic field; it provides a flexible mechanism to switch the molecular ground state from bonding to antibonding.
ACCESSION #
35763875

 

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