Monolayer and bilayer germanene systems

Hsin Yi Liu, Shih Yang Lin, Vo Khuong Dien, Chi Hsuan Lee, Hai Duong Pham, Thi My Duyen Huynh, Nguyen Thi Han, Ngoc Thanh Thuy Tran, Thi Dieu Hien Nguyen, Wei Bang Li, Ming Fa Lin

Research output: Chapter in Book/Report/Conference proceedingChapter


In this chapter show that the geometric and electronic properties of germanene-related system have diversified phenomena. Critical factors of group-IV monoelements, like buckled/planar structures, stacking configurations, layer numbers, and van der Waals interactions of bilayer composites, are considered simultaneously. The theoretical framework developed provides a concise physical and chemical picture. Delicate evaluations and analyses have been made on the optimal lattices, energy bands, and orbital-projected van Hove singularities. They provide decisive mechanisms, such as buckled/planar honeycomb lattices, multi-/single-orbital hybridizations, and significant/negligible spin–orbital couplings. We investigate the stacking-configuration-induced dramatic transformations of essential properties by relative shift in bilayer graphenes and silicenes. The lattice constant, interlayer distance, buckling height, and total energy essentially depend on the magnitude and direction of the relative shift: AA and AB. Apparently, bilayer systems are quite different from monolayer germanene in terms of geometric structures, electronic properties, orbital hybridizations, interlayer hopping integrals, and spin interactions.

Original languageEnglish
Title of host publicationFundamental Physicochemical Properties of Germanene-related Materials
Number of pages19
ISBN (Electronic)9780443158018
ISBN (Print)9780443158025
Publication statusPublished - 2023 Jan 1

All Science Journal Classification (ASJC) codes

  • General Engineering
  • General Materials Science


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