Work

Structural dependence of quantum transport properties on topological nodal-line semimetal bilayer borophene

Year: 2025

Type: article

Abstract: This work presents the electronic and transport properties of bilayer borophene nanoribbons. In the first part, a four-orbital tight-binding model is derived by fitting the ab initio band structure. The transport properties of armchair and zigzag bilayer borophene nanoribbons are then analyzed, both with and without periodic boundary conditions. In both scenarios, the nodal line causes conductance to increase with width and exhibit oscillations in narrow nanoribbons. Additionally, plots of current and charge density reveal that edge states have a more pronounced impact in narrower nanoribbons. Finally, uniaxial tensile strain is introduced as a tool to engineer the number of available transport channels. • Nodal line cause conductance oscillations at low energies. • Tight-binding model captures bilayer borophene’s bands and conductance. • Strain controls open channel numbers near zero energy. • Edge states in bilayer borophene appear in narrow ribbons, decoupling in wider ones.

Source: Computational Materials Science

DOI: 10.1016/j.commatsci.2025.113757

Authors: C.J. Páez-González, C.E. Ardila-Gutiérrez, D.A. Bahamon

Institutions: Universidad Industrial de Santander, Universidade Presbiteriana Mackenzie

Language: English

Topic: Topological Materials and Phenomena

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $3,290

Funders: Departamento Administrativo de Ciencia, Tecnología e Innovación (COLCIENCIAS), Coordenação de Aperfeiçoamento de Pessoal de Nível Superior, Conselho Nacional de Desenvolvimento Científico e Tecnológico, Universidad Industrial de Santander