Superconductivity in a molecular graphene

TL;DR

This paper proposes a method to enhance superconductivity by creating a molecular graphene super-lattice on ultrathin films, significantly increasing the superconducting gap and potentially enabling high-temperature superconductivity.

Contribution

It introduces a theoretical model showing how a molecular super-lattice can manipulate electron density of states to boost superconductivity.

Findings

Superlattice alters electron density of states significantly.

Superconducting gap can be increased by a factor of several.

Potential pathway to high-temperature superconductivity.

Abstract

We propose that constructing a molecule super-lattice on a superconducting ultrathin film is a promising way to manipulate superconductivity in experiment. We theoretically study superconductivity in a molecule graphene system, which is built by fabricating a hexagonal molecule super-lattice on 2-dimensional electron gas. The super-lattice potential dramatically changes the electron density of states, which oscillates as function of the energy. We show that such a molecular graphene may increase superconducting gap by a few times, which may open a new route to realize high temperature superconductivity.