# Current-Voltage Characteristics of Borophene and Borophane Sheets

## TL;DR

This study investigates the current-voltage behavior of different Borophene and Borophane sheets using density functional theory, revealing how structural anisotropy and hydrogenation influence electronic properties and potential detection methods.

## Contribution

It provides detailed analysis of how structural variations and hydrogenation affect the electronic and transport properties of Borophene sheets, a novel insight for material characterization.

## Key findings

- 8Pmmn and 8Pmmm have less anisotropy than 2Pmmn.
- 8Pmmn exhibits a Dirac cone but lower current.
- Hydrogenation reduces anisotropy and current.

## Abstract

Motivated by recent experimental and theoretical research on a monolayer of Boron atoms, Borophene, current-voltage characteristics of three different Borophene sheets, 2Pmmn, 8Pmmn and 8Pmmm, are calculated using density functional theory combined with nonequilibriumGreen function formalism. Borophene sheets with two and eight atoms in a unit cell are considered and bandstructure, electron density and structural anisotropy of them are analyzed in details. Results show that 8Pmmn and 8Pmmm structures which have eight atoms in the unit cell have less anisotropy than 2Pmmn. In addition, although 8Pmmn shows a Dirac cone in the bandstructure, its current is lower than two others. We also consider a fully hydrogenated Borophene, Borophane, and find that the hydrogenation process reduces the structural anisotropy and the current significantly. Our findings reveal that the current-voltage characteristics of the Borophene sheets can be used to detect the kind and the growth direction of the sample because it is strongly dependent on the direction of the electron transport, anisotropy and details of the unit cell of the Borophene.