Asymmetrically Doped Polyacetylene

TL;DR

This paper investigates how asymmetrical doping in polyacetylene alters its electronic properties, revealing potential for spin-polarized conduction in one-dimensional organic polymers.

Contribution

It introduces the concept of asymmetric doping in polyacetylene and demonstrates its ability to induce spin polarization, a novel behavior compared to symmetric doping.

Findings

Asymmetric doping leads to spin polarization in polyacetylene.

The degree of doping imbalance controls the transition to spin-polarized states.

Potential applications in organic spintronics.

Abstract

Doped one-dimensional (1D) conjugated polymers, such as polyacetylene, have a conductivity of some metals, like copper. We show that when this polymer is asymmetrically doped, unexpected properties are revealed, when compared to the behavior of the symmetrically standard doped systems (SDS). Depending on the level of imbalance between the chemical potentials of the two involved fermionic species, the polymer can be converted into a 1D partially or fully spin polarized organic conductor.