skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: First-Principles Calculations of van der Waals and Spin Orbit Effects on the Two-Dimensional Topological Insulator Stanene and Stanene on Ge(111) Substrate

Abstract

The structural and electronic properties of the monolayer and bilayer stanene structures have been studied using first-principles calculations. For the monolayer, the buckled structure is more stable than the flat one, with an opening of the band gap when spin-orbit coupling is taken into account, as mentioned in recent studies. For the bilayer, three types of stacking are considered: parallel layers, anti-parallel layers, and parallel layers where the first layer is shifted from the second one. These three configurations are named AA1, AA2, and AB, respectively. The two layers are separated by the distance d. The interactions between two layers of stanene are strong for a short distance, while the van der Waals bonding appears for a longer distance. Furthermore, stanene was fabricated experimentally on a substrate; thus, we proposed another study of electronic properties of stanene deposited on Ge(111) to reveal other behavior as a topological insulator and show the existence of the quantum spin Hall effect.

Authors:
;  [1];  [2]; ;  [1]
  1. Université Mohammed V, Laboratory of Condensed Matter and Interdisciplinary Sciences (LaMCScI), associé au CNRST (URAC 12), Département de Physique, Faculté des Sciences (Morocco)
  2. Hassan II Academy of Science and Technology (Morocco)
Publication Date:
OSTI Identifier:
22773887
Resource Type:
Journal Article
Journal Name:
Journal of Superconductivity and Novel Magnetism
Additional Journal Information:
Journal Volume: 31; Journal Issue: 8; Other Information: Copyright (c) 2018 Springer Science+Business Media, LLC, part of Springer Nature; http://www.springer-ny.com; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1557-1939
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; BONDING; DEPOSITION; ELECTRICAL INSULATORS; GERMANIUM; HALL EFFECT; LAYERS; L-S COUPLING; SUBSTRATES; TOPOLOGY; TWO-DIMENSIONAL SYSTEMS; VAN DER WAALS FORCES

Citation Formats

Bachra, M. El, Zaari, H., Benyoussef, A., Kenz, A. El, and Hachimi, A. G. El,. First-Principles Calculations of van der Waals and Spin Orbit Effects on the Two-Dimensional Topological Insulator Stanene and Stanene on Ge(111) Substrate. United States: N. p., 2018. Web. doi:10.1007/S10948-017-4503-9.
Bachra, M. El, Zaari, H., Benyoussef, A., Kenz, A. El, & Hachimi, A. G. El,. First-Principles Calculations of van der Waals and Spin Orbit Effects on the Two-Dimensional Topological Insulator Stanene and Stanene on Ge(111) Substrate. United States. doi:10.1007/S10948-017-4503-9.
Bachra, M. El, Zaari, H., Benyoussef, A., Kenz, A. El, and Hachimi, A. G. El,. Wed . "First-Principles Calculations of van der Waals and Spin Orbit Effects on the Two-Dimensional Topological Insulator Stanene and Stanene on Ge(111) Substrate". United States. doi:10.1007/S10948-017-4503-9.
@article{osti_22773887,
title = {First-Principles Calculations of van der Waals and Spin Orbit Effects on the Two-Dimensional Topological Insulator Stanene and Stanene on Ge(111) Substrate},
author = {Bachra, M. El and Zaari, H. and Benyoussef, A. and Kenz, A. El and Hachimi, A. G. El,},
abstractNote = {The structural and electronic properties of the monolayer and bilayer stanene structures have been studied using first-principles calculations. For the monolayer, the buckled structure is more stable than the flat one, with an opening of the band gap when spin-orbit coupling is taken into account, as mentioned in recent studies. For the bilayer, three types of stacking are considered: parallel layers, anti-parallel layers, and parallel layers where the first layer is shifted from the second one. These three configurations are named AA1, AA2, and AB, respectively. The two layers are separated by the distance d. The interactions between two layers of stanene are strong for a short distance, while the van der Waals bonding appears for a longer distance. Furthermore, stanene was fabricated experimentally on a substrate; thus, we proposed another study of electronic properties of stanene deposited on Ge(111) to reveal other behavior as a topological insulator and show the existence of the quantum spin Hall effect.},
doi = {10.1007/S10948-017-4503-9},
journal = {Journal of Superconductivity and Novel Magnetism},
issn = {1557-1939},
number = 8,
volume = 31,
place = {United States},
year = {2018},
month = {8}
}