This phenomenon results in NDR provided that the electron's mean free path is much longer than the device size. We discuss the strategies towards NDR and find that geometrically engineered devices make it possible to achieve NDR in graphene with sized geometrical features. This NDR mechanism is ...
The electronic transport data indicates the capability to direct electron flow through graphene nanostructures purely defined by electrostatic gating. By comparing the transconductance data recorded for different top gate geometries - continuous barrier and split-gate - the observed transport features for ...
1a) but a non-quantizing magnetic field \(B\) is applied perpendicular to graphene15. The field leads to an asymmetry in the potential created by the viscous flow around the injection contact (insets of Fig. 1e, f). The viscous contribution asymmetric in \(B\) is called the viscous ...
Electron transport in two-dimensional conducting materials such as graphene, with dominant electron–electron interaction, exhibits unusual vortex flow that leads to a nonlocal current-field relation (negative resistance), distinct from the classical Ohm’s law. The transport behavior of these materials ...
Produced by the viscous flow, vorticity can drive electric current against an applied field, resulting in a negative nonlocal voltage. We argue that the latter may play the same role for the viscous regime as zero electrical resistance does for superconductivity. Besides offering a diagnostic that...
In 2017, Levitov and colleagues at the University of Manchester reported signatures of such fluid-like electronbehavior ingraphene, an atom-thin sheet of carbon onto which they etched a thin channel with several pinch points. They observed that a current sent through the channel cou...
For the first time, we integrated electron-donating ferrocenes with light-harvesting /electron-donating (metallo)porphyrins and electron-accepting graphene nanoplates (GNP) into multicomponent conjugates. To control the rate of charge flow between the individual building blocks, we bridged them via ...
As a group, particles can cross obstacles in a more coordinated and efficient way, thus enhancing conductivity capabilities. To test the electron flow configuration, the research team turned to graphene, which is a one-atom-thick sheet of carbon, and which can be made exceptionally clean. ...
Using electrical transport experiments and shot noise thermometry, weinvestigate electron-phonon heat transfer rate in a suspended bilayer graphene.Contrary to monolayer graphene with heat flow via three-body supercollisionscattering, we find that regular electron - optical phonon scattering inbilayer ...
"The most exciting achievement of our study was developing the first practical application of viscous electron flow, a concept previously seen as purely theoretical," said Bandurin. "By using the THz waves to alter the electron viscosity in graphene, we successfully created a device that detects ...