Excitonic Superconductivity in Charge Injected Organics

TL;DR

This paper explores the possibility of inducing superconductivity in organic materials through a novel excitonic pairing mechanism at the interface of a device, driven by nonequilibrium conditions created by gate voltages.

Contribution

It introduces a new approach to achieve superconductivity in organics via excitonic pairing under nonequilibrium conditions, distinct from traditional doping methods.

Findings

Superconductivity may occur at organic interfaces under driven, nonequilibrium states.

Excitons can mediate pairing of charge carriers in these conditions.

Proposed experiments could verify the excitonic superconductivity mechanism.

Abstract

Transport of charge carriers can be controlled by doping through chemical and physical means. Unlike chemical doping, physical doping is carried out by a special technique through gate voltages in a field-effect transistor geometry. This technique keeps the carrier channels free from defects without complications from the crystalline structure and the dopant impurity sites. In this paper we discuss the occurrence of superconductivity at the interface of a device by an unconventional technique. We examine a dynamical pairing mechanism governed by the excitons in the active device. The pairing of charge carriers takes place when the system is in a nonequilibrium (driven) state. We discuss the physics of a plausible superconducting transition and suggest new experiments.