Electron-phonon contribution in aluminene: Superconductive and transport properties. (March 2021)

• Record Type: Journal Article
• Authors: Serifi, Ilias; Kanga, N'goyé Bré Junior; Drissi, Lalla Btissam; Saidi, El Hassan
• Is Part Of: Superlattices and microstructures. Volume 151(2021)
• Publication Date: 2021-03
• Subjects: Aluminene -- 2D buckled materials -- Electron-phonon coupling -- Superconductivity -- Transport properties -- Cooper pairs; Superlattices as materials -- Periodicals; Microstructure -- Periodicals; Semiconductors -- Periodicals; Superréseaux -- Périodiques; Microstructure (Physique) -- Périodiques; Semiconducteurs -- Périodiques; 621.38152
• DOI: 10.1016/j.spmi.2021.106822
• Languages: English
• ISSNs: 0749-6036

Abstract

Abstract: Density functional and many-body perturbation theories have been employed to investigate the superconductive character and transport properties in 2D buckled aluminene. The examination of superconductivity at low temperature reveals a huge dependence on the electron phonon coupling (EPC), especially in the calculation of the critical temperature by the Allen-Dynes theory. It is found that the EPC strength is dominated by the longitudinal and transversal optical phonon. The superconducting gap equals to 1.5 meV at 0 K, drops to 0 meV for temperatures above the critical temperature. Transport properties calculations reveals a carrier's mobility of 8842.6 c m 2 V − 1 s − 1 at 100 K which decreases to 620 c m 2 V − 1 s − 1 at room temperature. The findings of this work highlight the importance of aluminene as a promising candidate for future advanced applications. Highlights: Motivated by the huge importance for transport properties, we study 2D-superconductive materials. Superconductive character and transport properties of 2D buckled aluminene are explored. The evaluation of the electrons and phonons linewidth reveals that EPC arises mainly from specific optical modes. Superconducting gap and critical temperature are determined. Our work gives the transport capabilities of aluminene as a new device.