title: Directional dependence of the electronic and transport properties of 2D borophene and borophane.
abstract: Very recently two dimensional layers of boron atoms, so called borophene, have been successfully synthesized. It presents a metallic band structure, with a strong anisotropic character. Upon further hydrogen adsorption a new material is obtained, borophane; giving rise to a Dirac cone structure like the one in graphene. We have performed a first-principles study of the electronic and transport properties of borophene and borophane through the Landauer-Büttiker formalism. We find that borophene presents an electronic current two orders of magnitude larger than borophane. In addition we verified the direction dependence of the electronic current in two perpendicular directions, namely, Ixand Iy; where for both systems, we found a current ratio, η = Ix/Iy, of around 2. Aiming to control such a current anisotropy, η, we performed a study of its dependence with respect to an external strain. Where, by stretching the borophane sheet, η increases by 11% for a bias voltage of 50 mV.
authors.affiliation: Campus Avançado Jandaia do Sul, Universidade Federal do Paraná, 86900-000, Jandaia do Sul, PR, Brazil. jose.padilha@ufpr.br.
authors.forename: José Eduardo
authors.initials: JE
authors.lastname: Padilha
authors.affiliation: Instituto de Física, Universidade Federal de Uberlândia, 38400-902, Uberlândia, MG, Brazil.
authors.forename: Roberto Hiroki
authors.initials: RH
authors.lastname: Miwa
authors.affiliation: Instituto de Física, Universidade de São Paulo, CP 66318, 05315-970, São Paulo, SP, Brazil and Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Santo André, São Paulo, 09210-170, Brazil.
authors.forename: Adalberto
authors.initials: A
authors.lastname: Fazzio