Theory of electronic and transport properties of resonant triple quantum dot molecules

Abstract

We present a theory of electronic and transport properties of triple quantum dot molecules in the vicinity of quadruple points where four different charge configurations are on resonance. We study three different quadruple points in the presence of a magnetic field and show that a trapped particle in one of the dot plays an essential role in determining the spin character of the transport. Many‐electron states of the triple quantum dot molecules are used as transport channels in the Fermi's Golden Rule approach and it is demonstrated that the Aharonov–Bohm oscillations of the energy spectrum lead to spin‐selective oscillations in transport. (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)