Abstract:
:Transition metal dichalcogenides have attracted research interest over the last few decades due to their interesting structural chemistry, unusual electronic properties, rich intercalation chemistry and wide spectrum of potential applications. Despite the fact that the majority of related research focuses on semiconducting transition-metal dichalcogenides (for example, MoS2), recently discovered unexpected properties of WTe2 are provoking strong interest in semimetallic transition metal dichalcogenides featuring large magnetoresistance, pressure-driven superconductivity and Weyl semimetal states. We investigate the sister compound of WTe2, MoTe2, predicted to be a Weyl semimetal and a quantum spin Hall insulator in bulk and monolayer form, respectively. We find that bulk MoTe2 exhibits superconductivity with a transition temperature of 0.10 K. Application of external pressure dramatically enhances the transition temperature up to maximum value of 8.2 K at 11.7 GPa. The observed dome-shaped superconductivity phase diagram provides insights into the interplay between superconductivity and topological physics.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Qi Y,Naumov PG,Ali MN,Rajamathi CR,Schnelle W,Barkalov O,Hanfland M,Wu SC,Shekhar C,Sun Y,Süß V,Schmidt M,Schwarz U,Pippel E,Werner P,Hillebrand R,Förster T,Kampert E,Parkin S,Cava RJ,Felser C,Yan B,Medvedev Sdoi
10.1038/ncomms11038subject
Has Abstractpub_date
2016-03-14 00:00:00pages
11038issn
2041-1723pii
ncomms11038journal_volume
7pub_type
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