Superconductivity in Weyl semimetal candidate MoTe2

Yanpeng Qi; Pavel G. Naumov; Mazhar N. Ali; Catherine R. Rajamathi; Walter Schnelle; Oleg Barkalov; Michael Hanfland; Shu Chun Wu; Chandra Shekhar; Yan Sun; Vicky Süß; Marcus Schmidt; Ulrich Schwarz; Eckhard Pippel; Peter Werner; Reinald Hillebrand; Tobias Förster; Erik Kampert; Stuart Parkin; R. J. Cava; Claudia Felser; Binghai Yan; Sergey A. Medvedev

doi:10.1038/ncomms11038

Superconductivity in Weyl semimetal candidate MoTe₂

Yanpeng Qi, Pavel G. Naumov, Mazhar N. Ali, Catherine R. Rajamathi, Walter Schnelle, Oleg Barkalov, Michael Hanfland, Shu Chun Wu, Chandra Shekhar, Yan Sun, Vicky Süß, Marcus Schmidt, Ulrich Schwarz, Eckhard Pippel, Peter Werner, Reinald Hillebrand, Tobias Förster, Erik Kampert, Stuart Parkin, R. J. CavaClaudia Felser, Binghai Yan, Sergey A. Medvedev

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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.

Original language	English (US)
Article number	11038
Journal	Nature communications
Volume	7
DOIs	https://doi.org/10.1038/ncomms11038
State	Published - Mar 14 2016

All Science Journal Classification (ASJC) codes

General Chemistry
General Biochemistry, Genetics and Molecular Biology
General
General Physics and Astronomy

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Qi, Y., Naumov, P. G., Ali, M. N., Rajamathi, C. R., Schnelle, W., Barkalov, O., Hanfland, M., Wu, S. C., Shekhar, C., Sun, Y., Süß, V., Schmidt, M., Schwarz, U., Pippel, E., Werner, P., Hillebrand, R., Förster, T., Kampert, E., Parkin, S., ... Medvedev, S. A. (2016). Superconductivity in Weyl semimetal candidate MoTe₂. Nature communications, 7, Article 11038. https://doi.org/10.1038/ncomms11038

@article{2c2cd1e4612f4f15b563ff063da80708,

title = "Superconductivity in Weyl semimetal candidate MoTe2",

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.",

author = "Yanpeng Qi and Naumov, {Pavel G.} and Ali, {Mazhar N.} and Rajamathi, {Catherine R.} and Walter Schnelle and Oleg Barkalov and Michael Hanfland and Wu, {Shu Chun} and Chandra Shekhar and Yan Sun and Vicky S{\"u}{\ss} and Marcus Schmidt and Ulrich Schwarz and Eckhard Pippel and Peter Werner and Reinald Hillebrand and Tobias F{\"o}rster and Erik Kampert and Stuart Parkin and Cava, {R. J.} and Claudia Felser and Binghai Yan and Medvedev, {Sergey A.}",

note = "Funding Information: Y.Q. acknowledges financial support from the Alexander von Humboldt Foundation. We would like to thank C. Klausnitzer, M. Nicklas and R. Koban for their help with high-pressure magnetic measurements. This work was financially supported by the Deutsche Forschungsgemeinschaft (DFG, Project No. EB 518/1-1 of DFG-SPP 1666 {\textquoteleft}Topological Insulators{\textquoteright}) and by a European Research Council (ERC) Advanced Grant, No. (291472) {\textquoteleft}Idea Heusler{\textquoteright}.",

year = "2016",

month = mar,

day = "14",

doi = "10.1038/ncomms11038",

language = "English (US)",

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journal = "Nature communications",

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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, SA 2016, 'Superconductivity in Weyl semimetal candidate MoTe₂', Nature communications, vol. 7, 11038. https://doi.org/10.1038/ncomms11038

TY - JOUR

T1 - Superconductivity in Weyl semimetal candidate MoTe2

AU - Qi, Yanpeng

AU - Naumov, Pavel G.

AU - Ali, Mazhar N.

AU - Rajamathi, Catherine R.

AU - Schnelle, Walter

AU - Barkalov, Oleg

AU - Hanfland, Michael

AU - Wu, Shu Chun

AU - Shekhar, Chandra

AU - Sun, Yan

AU - Süß, Vicky

AU - Schmidt, Marcus

AU - Schwarz, Ulrich

AU - Pippel, Eckhard

AU - Werner, Peter

AU - Hillebrand, Reinald

AU - Förster, Tobias

AU - Kampert, Erik

AU - Parkin, Stuart

AU - Cava, R. J.

AU - Felser, Claudia

AU - Yan, Binghai

AU - Medvedev, Sergey A.

N1 - Funding Information: Y.Q. acknowledges financial support from the Alexander von Humboldt Foundation. We would like to thank C. Klausnitzer, M. Nicklas and R. Koban for their help with high-pressure magnetic measurements. This work was financially supported by the Deutsche Forschungsgemeinschaft (DFG, Project No. EB 518/1-1 of DFG-SPP 1666 ‘Topological Insulators’) and by a European Research Council (ERC) Advanced Grant, No. (291472) ‘Idea Heusler’.

PY - 2016/3/14

Y1 - 2016/3/14

N2 - 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.

AB - 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.

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JF - Nature communications

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Superconductivity in Weyl semimetal candidate MoTe₂

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