Germanene on Ag (111)

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

Research output: Chapter in Book/Report/Conference proceedingChapter


The fundamental properties are dramatically changed through the significant Ge-substrate chemical bondings, zone-folding effects, enhanced bucklings, and stacking configurations. The sufficient substrate Ag-layers in the calculations are utilized to simulate the stable geometric structures. The spin-dependent single- and many-particle interactions behave similarly. The various interlayer distances of the neighboring layers are comparable with one another. The theoretical predictions, which are conducted on the optimal geometries of Ge-adlayer and bilayer germanene on Ag (111) with the 3 × 3 and 4 × 4 super lattices, could be examined through experimental measurements. There exist certain important differences between the bilayer and monolayer germanene on Ag (111) in terms of the interlayer chemical bondings and the spin-dependent magnetic properties. It is almost impossible to delicately evaluate the 2D conduction electron density from the direction-dependent Fermi momenta in the presence/absence of spin splitting. The spin configuration in bilayer germanene/Ag (111), which presents a rather non-uniform spin-up and spin-down arrangement within an enlarged unit cell, mainly originates from the second-layer six Ge atoms. The (4px, 4py, 4pz) orbitals of Ge-atoms make the most important contributions to the ferromagnetic properties associated with the spin-created many-particle interactions.

Original languageEnglish
Title of host publicationFundamental Physicochemical Properties of Germanene-related Materials
Number of pages21
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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