Gate-Controlled Transmission of Quantum Hall Edge States in Bilayer Graphene

Physical Review Letters
Jing LiJun Zhu

Abstract

The edge states of the quantum Hall and fractional quantum Hall effect of a two-dimensional electron gas carry key information of the bulk excitations. Here we demonstrate gate-controlled transmission of edge states in bilayer graphene through a potential barrier with tunable height. The backscattering rate is continuously varied from 0 to close to 1, with fractional quantized values corresponding to the sequential complete backscattering of individual modes. Our experiments demonstrate the feasibility to controllably manipulate edge states in bilayer graphene, thus opening the door to more complex experiments.

References

Dec 12, 1988·Physical Review Letters·R J Haug von Klitzing K
Dec 12, 1988·Physical Review Letters·S WashburnD Kern
Jun 30, 2007·Science·D A Abanin, L S Levitov
Jun 30, 2007·Science·J R WilliamsC M Marcus
Aug 7, 2007·Physical Review Letters·B HuardD Goldhaber-Gordon
Nov 13, 2007·Physical Review Letters·Barbaros OzyilmazPhilip Kim
May 13, 2009·Proceedings of the National Academy of Sciences of the United States of America·R L WillettK W West
Aug 24, 2010·Nature Nanotechnology·C R DeanJ Hone
Sep 15, 2011·Nanotechnology·Seung-Geol NamHu-Jong Lee
Jun 22, 2013·Reports on Progress in Physics·R L Willett
Jun 1, 2014·Physical Review Letters·F AmetD Goldhaber-Gordon
Sep 5, 2015·Nature Communications·Sadashige MatsuoKensuke Kobayashi
Nov 1, 2016·Nature Nanotechnology·Jing LiJun Zhu
Nov 3, 2016·Proceedings of the National Academy of Sciences of the United States of America·Hailong FuXi Lin
Feb 14, 2018·Physical Review Letters·Jing LiJun Zhu

❮ Previous
Next ❯

Citations

Jan 19, 2019·Nano Letters·Louis VeyratBenjamin Sacépé

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.