Exchange interactions and frustrated magnetism in single-side hydrogenated and fluorinated graphene

Publikationstyp
Journal Article
Date Issued
2013-08-22
Sprache
English
Author(s)
Rudenko, A. N.  
Keil, Frerich 
Katsnelson, Mikhail  
Lichtenstein, Alexander I.  
Institut
Chemische Reaktionstechnik V-2  
TORE-URI
http://hdl.handle.net/11420/6478
Journal
Physical Review B - Condensed Matter and Materials Physics  
Volume
88
Issue
8
Article Number
081405
Citation
Physical Review B - Condensed Matter and Materials Physics 88 (8): 081405 (2013)
Publisher DOI
10.1103/PhysRevB.88.081405
Scopus ID
2-s2.0-84884550898
ArXiv ID
1306.5190v1
Publisher
The American Physical Society
Magnetism in single-side hydrogenated (C₂H) and fluorinated (C₂F) graphene is analyzed in terms of the Heisenberg model with parameters determined from first principles. We predict a frustrated ground state for both systems, which means the instability of collinear spin structures and sheds light on the absence of a conventional magnetic ordering in defective graphene demonstrated in recent experiments. Moreover, our findings suggest a highly correlated magnetic behavior at low temperatures offering the possibility of a spin-liquid state.
Subjects
Physics - Mesoscopic Systems and Quantum Hall Effect
Physics - Mesoscopic Systems and Quantum Hall Effect
Physics - Materials Science
Physics - Strongly Correlated Electrons
DDC Class
530: Physik
600: Technik
620: Ingenieurwissenschaften