Two-and one-dimensional honeycomb structures of silicon and germanium
Date
2009
Editor(s)
Advisor
Supervisor
Co-Advisor
Co-Supervisor
Instructor
BUIR Usage Stats
3
views
views
20
downloads
downloads
Citation Stats
Series
Abstract
First-principles calculations of structure optimization, phonon modes, and finite temperature molecular dynamics predict that silicon and germanium can have stable, two-dimensional, low-buckled, honeycomb structures. Similar to graphene, these puckered structures are ambipolar and their charge carriers can behave like a massless Dirac fermion due to their π and π* bands which are crossed linearly at the Fermi level. In addition to these fundamental properties, bare and hydrogen passivated nanoribbons of Si and Ge show remarkable electronic and magnetic properties, which are size and orientation dependent. These properties offer interesting alternatives for the engineering of diverse nanodevices.
Source Title
Physical Review Letters
Publisher
American Physical Society
Course
Other identifiers
Book Title
Keywords
Ambipolar, Dirac fermions, Electronic and magnetic properties, Finite temperatures, First-principles calculation, Fundamental properties, Graphene, Nano-devices, Nanoribbons, Orientation dependent, Phonon mode, Structure optimization, Dynamics, Fermions, Germanium, Honeycomb structures, Hydrogen, Magnetic properties, Molecular dynamics, Passivation, Structural optimization
Degree Discipline
Degree Level
Degree Name
Citation
Permalink
Published Version (Please cite this version)
Language
English