New Phases of Germanene

Autor: Özçelik, V. Ongun, Durgun, E., Ciraci, S.
Rok vydání: 2014
Předmět:
Zdroj: J. Phys. Chem. Lett 2014, 5, 2694 - 2699
Druh dokumentu: Working Paper
DOI: 10.1021/jz500977v
Popis: Germanene, a graphene like single layer structure of Ge, has been shown to be stable and recently grown on Pt and Au substrates. We show that a Ge adatom adsorbed to germanene pushes down the host Ge atom underneath and forms a dumbbell structure. This exothermic process occurs spontaneously. The attractive dumbbell-dumbbell interaction favors high coverage of dumbbells. This letter heralds stable new phases of germanene, which are constructed from periodically repeating coverage of dumbbell structures and display diversity of electronic and magnetic properties.
Comment: Published in JPCL http://pubs.acs.org/doi/abs/10.1021/jz500977v
Databáze: arXiv