Conductance oscillations induced by ballistic snake states in a graphene heterojunction

Thiti Taychatanapat, Jun You Tan, Yuting Yeo, Kenji Watanabe, Takashi Taniguchi and Barbaros Özyilmaz ()
Additional contact information
Thiti Taychatanapat: Graphene Research Centre, National University of Singapore
Jun You Tan: Graphene Research Centre, National University of Singapore
Yuting Yeo: Graphene Research Centre, National University of Singapore
Kenji Watanabe: National Institute for Materials Science
Takashi Taniguchi: National Institute for Materials Science
Barbaros Özyilmaz: Graphene Research Centre, National University of Singapore

Nature Communications, 2015, vol. 6, issue 1, 1-6

Abstract: Abstract The realization of p–n junctions in graphene, combined with the gapless and chiral nature of its massless Dirac fermions has led to the observation of many intriguing phenomena such as the quantum Hall effect in the bipolar regime, Klein tunnelling and Fabry–Pérot interferences, all of which involve electronic transport across p–n junctions. Ballistic snake states propagating along the p–n junctions have been predicted to induce conductance oscillations, manifesting their twisting nature. However, transport studies along p–n junctions have so far only been performed in low mobility devices. Here, we report the observation of conductance oscillations due to ballistic snake states along a p–n interface in high-quality graphene encapsulated by hexagonal boron nitride. These snake states are exceptionally robust as they can propagate over 12 μm, limited only by the size of our sample, and survive up to at least 120 K. The ability to guide carriers over a long distance provide a crucial building block for graphene-based electron optics.

Date: 2015
References: Add references at CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
https://www.nature.com/articles/ncomms7093 Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:6:y:2015:i:1:d:10.1038_ncomms7093

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/ncomms7093

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().