简介:TheverticalandlateralinteractionsinamultisheetarrayofInAs/GaAsquantumdotsareanalyzedbyfiniteelementmethod(FEM).Itisshownthatduetotheeffectsofverticalinteraction,nucleationpreferstohappenaboveburiedquantumdots(QDs).Meanwhile,theeffectsoflateralinteractionadjustthespacingoflateralneighboringQDs.TheverticalcouplingbecomesstrongwithdeceasingGaAsspacerheightandincreasingnumberofburiedlayers,whilethelateralcouplingbecomesstrongwithincreasingInAswettinglayerthickness.Thephenomenonthat,aftersuccessivelayers,thespacingandsizeofQDsislandsbecomeprogressivelymoreuniformisexplainedaccordingtotheminimumpotentialenergytheory.