Topic
Ribbon
About: Ribbon is a research topic. Over the lifetime, 10380 publications have been published within this topic receiving 80602 citations. The topic is also known as: narrow work & band.
Papers published on a yearly basis
1 / 3
Papers
IBM1
TL;DR: In this article, the electrical properties of nano-ribboned field effect transistor (FE transistor) devices were investigated as a function of ribbon width, and it was shown that the resistivity of a ribbon increases as its width decreases, indicating the impact of edge states.
Abstract: We have fabricated graphene nano-ribbon field-effect transistor devices and investigated their electrical properties as a function of ribbon width. Our experiments show that the resistivity of a ribbon increases as its width decreases, indicating the impact of edge states. Analysis of temperature-dependent measurements suggests a finite quantum confinement gap opening in narrow ribbons. The electrical current noise of the graphene ribbon devices at low frequency is found to be dominated by the 1/f noise.
1,733 citations
TL;DR: In this article, a method to predict the existence of edge states in graphene ribbons for a large class of boundaries was developed based on the bulk-edge correspondence between the quantized value of the Zak phase, which is a Berry phase across an appropriately chosen one-dimensional Brillouin zone, and the presence of a localized state of momentum at the boundary of the ribbon.
Abstract: We develop a method to predict the existence of edge states in graphene ribbons for a large class of boundaries. This approach is based on the bulk-edge correspondence between the quantized value of the Zak phase $\mathcal{Z}({k}_{\ensuremath{\parallel}})$, which is a Berry phase across an appropriately chosen one-dimensional Brillouin zone, and the existence of a localized state of momentum ${k}_{\ensuremath{\parallel}}$ at the boundary of the ribbon. This bulk-edge correspondence is rigorously demonstrated for a one-dimensional toy model as well as for graphene ribbons with zigzag edges. The range of ${k}_{\ensuremath{\parallel}}$ for which edge states exist in a graphene ribbon is then calculated for arbitrary orientations of the edges. Finally, we show that the introduction of an anisotropy leads to a topological transition in terms of the Zak phase, which modifies the localization properties at the edges. Our approach gives a new geometrical understanding of edge states, and it confirms and generalizes the results of several previous works.
587 citations
TL;DR: A smooth 3D ribbon model of a protein is easily constructed by creating a set of nearly parallel B-spline curves fitted to the peptide plane, applicable to both vector and raster devices.
528 citations
TL;DR: In this paper, it was shown that hydrogenation of nanographite is able to induce finite magnetization and demonstrated the spontaneous magnetism of a graphene ribbon in which each carbon is bonded to two hydrogen atoms at one edge and to a single hydrogen atom at another edge.
Abstract: Hydrogenated nanographite can display spontaneous magnetism Recently we proposed that hydrogenation of nanographite is able to induce finite magnetization We have performed theoretical investigation of a graphene ribbon in which each carbon is bonded to two hydrogen atoms at one edge and to a single hydrogen atom at another edge Application of the local-spin-density approximation to the calculation of the electronic band-structure of the ribbon shows appearance of a spin-polarized flat band at the Fermi energy Producing different numbers of mono-hydrogenated carbons and di-hydrogenated carbons can create magnetic moments in nanographite
499 citations
TL;DR: It is shown that the linkingNumber of a closed ribbon can be decomposed into the linking number of a reference ribbon plus a sum of locally determined "linking differences."
Abstract: A closed duplex DNA molecule relaxed and containing nucleosomes has a different linking number from the same molecule relaxed and without nucleosomes. What does this say about the structure of the nucleosome? A mathematical study of this question is made, representing the DNA molecule by a ribbon. It is shown that the linking number of a closed ribbon can be decomposed into the linking number of a reference ribbon plus a sum of locally determined "linking differences."
390 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2025 | 144 |
| 2024 | 230 |
| 2023 | 294 |
| 2022 | 658 |
| 2021 | 156 |
| 2020 | 243 |