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Superconductivity in Weyl semimetal candidate MoTe2

Author(s): Qi, Yanpeng; Naumov, Pavel G.; Ali, Mazhar N.; Rajamathi, Catherine R.; Schnelle, Walter; et al

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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.
Publication Date: 14-Mar-2016
Electronic Publication Date: 14-Mar-2016
Citation: Qi, Yanpeng, Naumov, Pavel G., Ali, Mazhar N., Rajamathi, Catherine R., Schnelle, Walter, Barkalov, Oleg, Hanfland, Michael, Wu, Shu-Chun, Shekhar, Chandra, Sun, Yan, Süß, Vicky, Schmidt, Marcus, Schwarz, Ulrich, Pippel, Eckhard, Werner, Peter, Hillebrand, Reinald, Förster, Tobias, Kampert, Erik, Parkin, Stuart, Cava, Robert J., Felser, Claudia, Yan, Binghai, Medvedev, Sergey A. (2016). Superconductivity in Weyl semimetal candidate MoTe2. Nature Communications, 7 (11038 - 11038. doi:10.1038/ncomms11038
DOI: doi:10.1038/ncomms11038
EISSN: 2041-1723
Pages: 7.14:11038-1 - 11038-7
Type of Material: Journal Article
Journal/Proceeding Title: Nature Communications
Version: Final published version. This is an open access article.
Notes: Nature Communications. Volume 7, 14 March 2016, Article number 11038.

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