Proposal of Two-Pulse Excitation to Efficiently Photoinduced Novel $sp^3$ Nano Domain with Frozen Shear in Graphite Crystal

TL;DR

This paper introduces a two-pulse laser method to create and stabilize $sp^3$-bonded nano-domains with frozen shear in graphite, enabling efficient interlayer bond formation.

Contribution

It presents a novel two-pulse excitation technique to induce and freeze $sp^3$ nano-domains in graphite, advancing control over interlayer bonding.

Findings

Two-pulse excitation effectively induces $sp^3$ nano-domains.

The second pulse stabilizes the shear and bonds before relaxation.

The method enhances interlayer $sp^3$ bond formation efficiency.

Abstract

We propose a two-pulse excitation to efficiently photoinduced a novel $sp^3$-bonded nano-domain with a frozen shear in a graphite crystal. This $sp^3$ structure is known to be well stabilized by shear displacement between neighboring two graphite layers. This shear motion is generated only as a transient and unfrozen one by the first visible laser pulse, shone over the graphite crystal. While, the second pulse is proved to freeze it before it disappears, resulting in an efficient interlayer $\sigma$ ($sp^3$) bond formation.