# Graphite Under Compression: Shift of Layer Breathing and Shear Modes Frequencies with Interlayer Spacing

## TL;DR

This paper theoretically investigates how interlayer spacing affects vibrational modes in graphite, providing insights into interlayer interactions crucial for layered material applications.

## Contribution

It introduces a method to quantify the relationship between interlayer spacing and vibrational mode frequencies in graphite, applicable to other layered materials.

## Key findings

- Interlayer spacing influences vibrational frequencies
- Method quantifies interlayer interaction effects
- Applicable to various layered materials

## Abstract

Layered materials have huge potential in various applications due to their extraordinary properties. To determine the interlayer interaction (or equivalently the layer spacing under different perturbations) is of critical importance. In this letter, we focus on one of the most prominent layered materials, graphite, and theoretically quantify the relationship between its interlayer spacing and the vibrational frequencies of its layer breathing and shear modes, which are measures of the interlayer interaction. The method used here to determine the interlayer interaction can be further applied to other layered materials.