Selenium capped monolayer NbSe2 for two-dimensional superconductivity studies

Title
Selenium capped monolayer NbSe2 for two-dimensional superconductivity studies
Authors
류혜진Seita OnishiMiguel M. UgedaYi ZhangYi ChenClaudia Ojeda-AristizabalSung-Kwan MoZahid HussainZhi-Xun ShenMichael F. CrommieAlex Zettl
Issue Date
2016-12
Publisher
Physica Status Solidi. B, Basic Solid State Physics
Citation
VOL 253, NO 12-2399
Abstract
Superconductivity in monolayer niobium diselenide (NbSe2) on bilayer graphene is studied by electrical transport. Monolayer NbSe2 is grown on bilayer graphene by molecular beam epitaxy and capped with a selenium film to avoid degradation in air. The selenium capped samples have T-C=1.9K. In situ measurements down to 4K in ultrahigh vacuum show that the effect of the selenium layer on the transport is negligible. The superconducting transition and upper critical fields in air exposed and selenium capped samples are compared. Schematic of monolayer NbSe2/bilayer graphene with selenium capping layer and electrical contacts.
URI
http://pubs.kist.re.kr/handle/201004/70280
ISSN
0370-1972
Appears in Collections:
KIST Publication > Article
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