Analytical determination of atypical quantized resistances in graphene pn junctions

AF Rigosi, M Marzano, A Levy, HM Hill, DK Patel… - Physica B: Condensed …, 2020 - Elsevier
A mathematical approach is introduced for predicting quantized resistances in graphene pn
junction devices that utilize more than a single entry and exit point for electron flow …

Quantum transport in graphene junctions with moiré superlattice modulation

J Hu, AF Rigosi, JU Lee, HY Lee, Y Yang, CI Liu… - Physical Review B, 2018 - APS
We present simulations of quantum transport in graphene pn junctions (pn Js) in which
moiré superlattice potentials are incorporated to demonstrate the interplay between pn Js …

Manipulation of valley isospins in strained graphene for valleytronics

N Myoung, H Choi, HC Park - Carbon, 2020 - Elsevier
Graphene's outstanding mechanical properties lend to strain engineering, allowing for future
valleytronics and nanoelectromechanic applications. In this work, we have found that a …

[HTML][HTML] Electron wave and quantum optics in graphene

H Chakraborti, C Gorini, A Knothe, MH Liu… - Journal of Physics …, 2024 - iopscience.iop.org
In the last decade, graphene has become an exciting platform for electron optical
experiments, in some aspects superior to conventional two-dimensional electron gases …

Giant valley-isospin conductance oscillations in ballistic graphene

C Handschin, P Makk, P Rickhaus, R Maurand… - Nano …, 2017 - ACS Publications
At high magnetic fields the conductance of graphene is governed by the half-integer
quantum Hall effect. By local electrostatic gating ap–n junction perpendicular to the …

[HTML][HTML] Accessing ratios of quantized resistances in graphene p–n junction devices using multiple terminals

D Patel, M Marzano, CI Liu, HM Hill, M Kruskopf, H Jin… - AIP Advances, 2020 - pubs.aip.org
The utilization of multiple current terminals on millimeter-scale graphene p–n junction
devices has enabled the measurement of many atypical, fractional multiples of the quantized …

Manipulating quantum Hall edge channels in graphene through scanning gate microscopy

L Bours, S Guiducci, A Mreńca-Kolasińska, B Szafran… - Physical Review B, 2017 - APS
We show evidence of the backscattering of quantum Hall edge channels in a narrow
graphene Hall bar, induced by the gating effect of the conducting tip of a scanning gate …

Aharonov-Bohm conductance oscillations and current equilibration in local junctions in graphene

D Żebrowski, A Mreńca-Kolasińska, B Szafran - Physical Review B, 2018 - APS
We consider a small p-type island defined within an n-type graphene nanoribbon induced
by the potential of a floating electrode. In the quantum Hall conditions the island supports …

Equilibration of quantum Hall edges in symmetry-broken bilayer graphene

C Kumar, SK Srivastav, A Das - Physical Review B, 2018 - APS
Equilibration of quantum Hall edges is studied in a high quality dual gated bilayer graphene
device in both unipolar and bipolar regimes when all the degeneracies of the zero energy …

Analysing quantized resistance behaviour in graphene Corbino pn junction devices

CI Liu, DS Scaletta, DK Patel, M Kruskopf… - Journal of physics D …, 2020 - iopscience.iop.org
Just a few of the promising applications of graphene Corbino pnJ devices include two-
dimensional Dirac fermion microscopes, custom programmable quantized resistors, and …