Tuning of coupling modes in laterally parallel double open quantum dots

TL;DR

This paper investigates how tuning the coupling modes in parallel double open quantum dots affects electronic transport, revealing phenomena like magnetic blocking, turbulence, and Fano resonance crossover.

Contribution

It introduces a method to control coupling modes in double quantum dots via barrier strength and magnetic field, analyzing resulting transport effects.

Findings

Identification of magnetic blocking and turbulence effects.

Observation of Fano to dip line-shape crossover.

Demonstration of tunable coupling modes in quantum dots.

Abstract

We consider electronic transport through laterally parallel double open quantum dots embedded in a quantum wire in a perpendicular magnetic field. The coupling modes of the dots are tunable by adjusting the strength of a central barrier and the applied magnetic field. Probability density and electron current density are calculated to demonstrate transport effects including magnetic blocking, magnetic turbulence, and a hole-like quasibound state feature. Fano to dip line-shape crossover in the conductance is found by varying the magnetic field.