Quantum Hall droplets in coupled lateral quantum dots

TL;DR

This paper combines theoretical modeling and experimental spectroscopy to study quantum Hall droplets in coupled lateral quantum dots, revealing spin transitions and blockade phenomena in controlled electron configurations.

Contribution

It introduces a configuration interaction and unrestricted Hartree-Fock based theoretical approach for large electron quantum Hall droplets and demonstrates experimental validation of spin blockade effects.

Findings

Successful creation of (5,5) quantum Hall droplet

Observation of Spin Blockade spectra

Theoretical prediction of magnetic field evolution of states

Abstract

We present a theory and Coulomb and Spin Blockade spectroscopy experiments on quantum Hall droplets with controlled electron numbers (N1,N2) in laterally coupled gated quantum dots. The theory is based on the configuration interaction method (CI) coupled with the unrestricted Hartree-Fock (URHF) basis. It allows us to calculate the magnetic field evolution of ground and excited states of coupled quantum dots with large electron numbers. The method is applied to the spin transitions in the (5,5) droplet. Preliminary experimental results demonstrate the creation of the (5,5) droplet and its Spin Blockade spectra.