Flux induced semiconducting behavior of a quantum network

TL;DR

This paper demonstrates that a diamond-shaped quantum network can exhibit p-type or n-type semiconducting behavior by tuning on-site potentials and magnetic flux, supported by density of states and conductance analyses.

Contribution

It introduces a method to induce semiconducting behavior in a quantum network through magnetic flux and potential tuning, expanding the understanding of quantum network functionalities.

Findings

The network's semiconducting type depends on on-site potential and magnetic flux.

Density of states analysis confirms tunable electronic properties.

Conductance studies support the potential for device applications.

Abstract

We show that a diamond shaped periodic network, recently proposed as a model of a spin filter (A. Aharony {\em et al.} \cite{aharon08}) is capable of behaving as a p-type or an n-type semiconductor depending on a suitable choice of the on-site potentials of the atoms occupying the vertices of the lattice, and the strength of the magnetic flux threading each plaquette of the network. A detailed study of the density of states of an infinite network is made together with the conductance of finite sized system to establish the idea.