Prediction of superconductivity in Bilayer Kagome borophene

TL;DR

This study uses first-principles calculations to explore the electronic and superconducting properties of Bilayer Kagome borophene, revealing its potential as a high-temperature 2D superconductor with Tc up to 30 K after doping.

Contribution

It is the first detailed theoretical investigation of superconductivity in Bilayer Kagome borophene, demonstrating its high Tc potential through Fermi level tuning.

Findings

BK-borophene is a single-gap superconductor with Tc of 11.0 K.

Doping enhances Tc to 30.0 K by aligning Fermi level with Van Hove singularity.

The study highlights BK-borophene as a promising 2D superconducting material.

Abstract

The element boron has long been central to two-dimensional superconducting materials, and numerous studies have demonstrated the presence of superconductivity in various boron-based structures. Recent work introduced a new variant: Bilayer Kagome borophene, characterized by its bilayer Kagome lattice with van Hove singularity. Using first-principles calculations, our research investigates the unique electronic structure and superconducting properties of Bilayer Kagome borophene (BK-borophene) through first-principles calculations. BK-borophene is identified as a single-gap superconductor with an initial superconducting transition temperature (Tc) of 11.0 K. By strategically doping the material to align its Fermi level with the Van Hove singularity, Tc is significantly enhanced to 30.0 K. The results contribute to the existing understanding of BK-borophene, highlighting its potential as a member of the expanding family of two-dimensional superconducting materials.