Premium
Selenium capped monolayer NbSe 2 for two‐dimensional superconductivity studies
Author(s) -
Onishi Seita,
Ugeda Miguel M.,
Zhang Yi,
Chen Yi,
OjedaAristizabal Claudia,
Ryu Hyejin,
Mo SungKwan,
Hussain Zahid,
Shen ZhiXun,
Crommie Michael F.,
Zettl Alex
Publication year - 2016
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.201600235
Subject(s) - monolayer , diselenide , superconductivity , bilayer , selenium , niobium , bilayer graphene , molecular beam epitaxy , chemistry , electrical resistivity and conductivity , graphene , materials science , layer (electronics) , condensed matter physics , epitaxy , nanotechnology , physics , membrane , organic chemistry , biochemistry , quantum mechanics
Superconductivity in monolayer niobium diselenide (NbSe 2 ) on bilayer graphene is studied by electrical transport. Monolayer NbSe 2 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 = 1.9 K. In situ measurements down to 4 K 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 NbSe 2 /bilayer graphene with selenium capping layer and electrical contacts.