# Physical origin of enhanced electrical conduction in aluminum-graphene composites

Source: [Physical origin of enhanced electrical conduction in aluminum-graphene composites](<https://www.sota2.com/research/paper/68fa46531e209131ce91f7f3>)

Collection index: [llms.txt](<https://www.sota2.com/research/llms.txt>)

Data updated: 2025-10-25T05:46:00.493Z

Authors: K. Nepal, C. Ugwumadu, K.N. Subedi, K. Kappagantula, D. A. Drabold

Published: 2024-01-04T16:44:31.000Z

## Abstract

The electronic and transport properties of aluminum-graphene composite materials were investigated using ab initio plane wave density functional theory. The interfacial structure is reported for several configurations. In some cases, the face-centered aluminum (111) surface relaxes in a nearly ideal registry with graphene, resulting in a remarkably continuous interface structure. The Kubo-Greenwood formula and space-projected conductivity were employed to study electronic conduction in aluminum single- and double-layer graphene-aluminum composite models. The electronic density of states at the Fermi level is enhanced by the graphene for certain aluminum-graphene interfaces, thus, improving electronic conductivity. In double-layer graphene composites, conductivity varies non-monotonically with temperature, showing an increase between 300-400 K at short aluminum-graphene distances, unlike the consistent decrease in single-layer composites.

## Recorded benchmark results

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## Original sources and implementation

[Original paper](<https://arxiv.org/abs/2401.02348>)

[PDF](<https://arxiv.org/pdf/2401.02348.pdf>)