Please use this identifier to cite or link to this item:
http://hdl.handle.net/10261/2757
Share/Export:
SHARE BASE | |
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE | |
Title: | Strong covalent bonding between two graphene layers |
Authors: | Andrés, Pedro L. de CSIC ORCID CVN; Ramírez, Rafael CSIC ORCID; Vergés, José A. CSIC ORCID CVN | Keywords: | few graphene layers | Issue Date: | 14-Jan-2008 | Publisher: | American Physical Society | Citation: | Phys Rev B 77 (4) 045403 (2008) | Abstract: | We show that two graphene layers stacked directly on top of each other (AA stacking) form strong chemical bonds when the distance between planes is 0.156 nm. Simultaneously, C-C in-plane bonds are considerably weakened from partial double-bond (0.141 nm) to single bond (0.154 nm). This polymorphic form of graphene bilayer is meta-stable w.r.t. the one bound by van der Waals forces at a larger separation (0.335 nm) with an activation energy of 0.16 eV/cell. Similarly to the structure found in hexaprismane, C forms four single bonds in a geometry mixing 90 and 120 angles. Intermediate separations between layers can be stabilized under external anisotropic stresses showing a rich electronic structure changing from semi-metal at van der Waals distance, to metal when compressed, to wide gap semiconductor at the meta-stable minimum. | URI: | http://hdl.handle.net/10261/2757 |
Appears in Collections: | (ICMM) Artículos |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
AAdigCSIC.pdf | 207,72 kB | Adobe PDF | View/Open |
CORE Recommender
Page view(s)
365
checked on Apr 16, 2024
Download(s)
532
checked on Apr 16, 2024
Google ScholarTM
Check
WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.