Results 61 to 70 of about 942,168 (389)

Appearance of Negative Differential Conductivity in Graphene Nanoribbons at High-Harmonics

open access: yes, 2012
We theoretically study current dynamics of graphene nanoribbons subject to bias dc and ac driven fields. We showed that graphene nanoribbons exhibit negative high-harmonic differential conductivity.
Abukari, S. S., Mensah, S. Y., Rabiu, M.
core   +1 more source

High-throughput production of cheap mineral-based two-dimensional electrocatalysts for high-current-density hydrogen evolution

open access: yesNature Communications, 2020
The large-scale implementation of electrochemical technologies will require the high-throughput production of high-performance, inexpensive catalysts.
Chi Zhang   +8 more
doaj   +1 more source

Symmetry classification of energy bands in graphene and silicene

open access: yes, 2012
We present the results of the symmetry classification of the electron energy bands in graphene and silicene using group theory algebra and the tight--binding approximation.
Kogan, E.
core   +1 more source

Emergent ferromagnetism near three-quarters filling in twisted bilayer graphene [PDF]

open access: yesScience, 2019
Twisted bilayer graphene goes magnetic When two layers of graphene in a bilayer are twisted with respect to each other by just the right, “magic,” angle, the electrons in the system become strongly correlated. As the electronic density is tuned by gating,
Aaron L. Sharpe   +7 more
semanticscholar   +1 more source

Conductance quantization suppression in the quantum Hall regime

open access: yesNature Communications, 2018
Conductance quantization is the hallmark of non-interacting confined systems. The authors show that the quantization in graphene nanoconstrictions with low edge disorder is suppressed in the quantum Hall regime.
José M. Caridad   +8 more
doaj   +1 more source

Wafer bonding solution to epitaxial graphene - silicon integration

open access: yes, 2013
The development of graphene electronics requires the integration of graphene devices with Si-CMOS technology. Most strategies involve the transfer of graphene sheets onto silicon, with the inherent difficulties of clean transfer and subsequent graphene ...
Berger, Claire   +9 more
core   +3 more sources

The Regulation of Trace Metal Elements in Cancer Ferroptosis

open access: yesAdvanced Biology, EarlyView.
The induction of ferroptosis inhibits tumor growth, enhances anticancer efficacy, and overcomes drug resistance. Recent evidence shows nonferrous metal elements play a role in ferroptosis. This review focuses on how trace metals regulate ferroptosis processes like iron accumulation, lipid peroxidation, and antioxidant defense.
Xiaoyan Wang   +5 more
wiley   +1 more source

Localization of metallicity and magnetic properties of graphene and of graphene nanoribbons doped with boron clusters [PDF]

open access: yes, 2013
As a possible way of modifying the intrinsic properties of graphene we study the doping of graphene by embedded boron clusters with density functional theory. Cluster doping is technologically relevant as the cluster implantation technique can be readily applied to graphene.
arxiv   +1 more source

Stabilizing sample-wide Kekulé orders in graphene/transition metal dichalcogenide heterostructures [PDF]

open access: yesarXiv, 2022
Kekul\'e phases are Peierls-like lattice distortions in graphene that are predicted to host novel electronic states beyond graphene (1-8). Although the Kekul\'e phases are realized in graphene through introducing electron-electron interactions at high magnetic fields (9-11) or adatom superlattices (12-15), it is still an extremely challenge to obtain ...
arxiv  

Phase separation of hydrogen atoms adsorbed on graphene and the smoothness of the graphene-graphane interface [PDF]

open access: yesPhys. Rev. B 85, 035408 (2012), 2011
The electronic properties of a graphene sheet with attached hydrogen atoms is studied using a modified Falicov-Kimball model on the honeycomb lattice. It is shown that in the ground state this system separates into two phases: fully hydrogenated graphene (graphane) and hydrogen-free graphene. The graphene-graphane boundary acquires a positive interface
arxiv   +1 more source

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