Change search
ReferencesLink to record
Permanent link

Direct link
Low contact resistance in epitaxial graphene devices for quantum metrology
Chalmers, Sweden.
Chalmers, Sweden.
University of New S Wales, Australia.
Linköping University, Department of Physics, Chemistry and Biology, Semiconductor Materials. Linköping University, Faculty of Science & Engineering.
Show others and affiliations
2015 (English)In: AIP Advances, ISSN 2158-3226, E-ISSN 2158-3226, Vol. 5, no 8, 087134- p.Article in journal (Refereed) Published
Abstract [en]

We investigate Ti/Au contacts to monolayer epitaxial graphene on SiC (0001) for applications in quantum resistance metrology. Using three-terminal measurements in the quantum Hall regime we observed variations in contact resistances ranging from a minimal value of 0.6 Omega up to 11 k Omega. We identify a major source of high-resistance contacts to be due bilayer graphene interruptions to the quantum Hall current, whilst discarding the effects of interface cleanliness and contact geometry for our fabricated devices. Moreover, we experimentally demonstrate methods to improve the reproducibility of low resistance contacts (less than 10 Omega) suitable for high precision quantum resistance metrology.

Place, publisher, year, edition, pages
AMER INST PHYSICS , 2015. Vol. 5, no 8, 087134- p.
National Category
Chemical Sciences
URN: urn:nbn:se:liu:diva-122071DOI: 10.1063/1.4928653ISI: 000360655900043OAI: diva2:885146

Funding Agencies|Graphene Flagship [CNECT-ICT-604391]; Swedish Foundation for Strategic Research (SSF); Linnaeus Centre for Quantum Engineering; Knut and Alice Wallenberg Foundation; Chalmers AoA Nano; Swedish-Korean Basic Research Cooperative Program of the NRF [2014R1A2A1A1 2067266]; EMRP project GraphOhm; EMRP within EURAMET; EMRP within European Union

Available from: 2015-12-18 Created: 2015-10-19 Last updated: 2016-01-14

Open Access in DiVA

fulltext(2079 kB)56 downloads
File information
File name FULLTEXT01.pdfFile size 2079 kBChecksum SHA-512
Type fulltextMimetype application/pdf

Other links

Publisher's full text

Search in DiVA

By author/editor
Yakimova, Rositsa
By organisation
Semiconductor MaterialsFaculty of Science & Engineering
In the same journal
AIP Advances
Chemical Sciences

Search outside of DiVA

GoogleGoogle Scholar
Total: 56 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 102 hits
ReferencesLink to record
Permanent link

Direct link