Spatially resolving edge states of chiral graphene nanoribbons
Chenggang Tao,Chenggang Tao,Liying Jiao,Oleg V. Yazyev,Oleg V. Yazyev,Yen-Chia Chen,Yen-Chia Chen,Juanjuan Feng,Juanjuan Feng,Xiaowei Zhang,Xiaowei Zhang,Rodrigo B. Capaz,Rodrigo B. Capaz,James M. Tour,Alex Zettl,Alex Zettl,Steven G. Louie,Steven G. Louie,Hongjie Dai,Michael F. Crommie,Michael F. Crommie +20 more
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TLDR
In this paper, a study using scanning tunnelling microscopy and spectroscopy reveals how chirality at the atomically well-defined edges of a graphene nanoribbon affects its electronic structure.Abstract:
Edge effects matter in graphene, particularly in nanoribbons. A study using scanning tunnelling microscopy and spectroscopy reveals how chirality at the atomically well-defined edges of a graphene nanoribbon affects its electronic structure.read more
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Direct experimental determination of onset of electron–electron interactions in gap opening of zigzag graphene nanoribbons
TL;DR: These results provide direct experimental confirmation of electron-electron interactions in gap opening in zigzag nanoribbons, and reveal a critical width of 3 nm for its onset.
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Ferromagnetism in Graphene Nanoribbons: Split versus Oxidative Unzipped Ribbons
S. S. Rao,S. Narayana Jammalamadaka,Andre Stesmans,Victor Moshchalkov,J. van Tol,D. V. Kosynkin,A. Higginbotham-Duque,James M. Tour +7 more
TL;DR: In this paper, two types of graphene nanoribbons, namely, potassium-split and chemically converted, were investigated for their magnetic properties using the combination of static magnetization and electron spin resonance measurements.
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Importance of open, heteroatom-decorated edges in chemically doped-graphene for supercapacitor applications
Kazunori Fujisawa,Rodolfo Cruz-Silva,Kap Seung Yang,Yoong Ahm Kim,Takuya Hayashi,Morinobu Endo,Mauricio Terrones,Mauricio Terrones,Mildred S. Dresselhaus +8 more
TL;DR: In this article, the stability of pure-carbon-rich edges and/or heteroatom-decorated edges, and their effect on the electrochemical performance remain largely unexplored.
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Lattice Relaxation at the Interface of Two-Dimensional Crystals: Graphene and Hexagonal Boron-Nitride
TL;DR: In situ scanning tunneling microscopy is used to study the 2D heteroepitaxy of BN on graphene edges on a Ru(0001) surface with the aim of understanding the propagation of interfacial strain and found that defect-free, pseudomorphic growth of Bn on a graphene edge "substrate" occurs only for a short distance perpendicular to the interface.
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A Quest for Structurally Uniform Graphene Nanoribbons: Synthesis, Properties, and Applications.
TL;DR: This Perspective introduces the recently reported bottom-up synthetic methods for graphene nanoribbons and the theoretical and experimental researches on those physical properties and applications and emphasizes how structurally controlled synthesis is important and provides future outlooks in graphenenanoribbon science.
References
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Energy band-gap engineering of graphene nanoribbons.
TL;DR: It is found that the energy gap scales inversely with the ribbon width, thus demonstrating the ability to engineer the band gap of graphene nanostructures by lithographic processes.
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Chemically Derived, Ultrasmooth Graphene Nanoribbon Semiconductors
TL;DR: A chemical route to produce graphene nanoribbons with width below 10 nanometers was developed, as well as single ribbons with varying widths along their lengths or containing lattice-defined graphene junctions for potential molecular electronics.
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Energy Gaps in Graphene Nanoribbons
TL;DR: The authors' ab initio calculations show that the origin of energy gaps for GNRs with armchair shaped edges arises from both quantum confinement and the crucial effect of the edges, which differs from the results of simple tight-binding calculations or solutions of the Dirac's equation based on them.
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Edge state in graphene ribbons: Nanometer size effect and edge shape dependence.
TL;DR: It is found that a non-negligible edge state survives even in graphene ribbons with less developed zigzag edges, when the system size is on a nanometer scale.
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Half-metallic graphene nanoribbons
TL;DR: In this article, it was shown that if in-plane homogeneous electric fields are applied across the zigzag-shaped edges of the graphene nanoribbons, their magnetic properties can be controlled by the external electric fields.