Enhanced superconductivity in atomically thin TaS2
10.1038/ncomms11043
Crossref journal-article
Springer Science and Business Media LLC
Nature Communications (297)
Abstract

AbstractThe ability to exfoliate layered materials down to the single layer limit has presented the opportunity to understand how a gradual reduction in dimensionality affects the properties of bulk materials. Here we use this top–down approach to address the problem of superconductivity in the two-dimensional limit. The transport properties of electronic devices based on 2H tantalum disulfide flakes of different thicknesses are presented. We observe that superconductivity persists down to the thinnest layer investigated (3.5 nm), and interestingly, we find a pronounced enhancement in the critical temperature from 0.5 to 2.2 K as the layers are thinned down. In addition, we propose a tight-binding model, which allows us to attribute this phenomenon to an enhancement of the effective electron–phonon coupling constant. This work provides evidence that reducing the dimensionality can strengthen superconductivity as opposed to the weakening effect that has been reported in other 2D materials so far.

Bibliography

Navarro-Moratalla, E., Island, J. O., Mañas-Valero, S., Pinilla-Cienfuegos, E., Castellanos-Gomez, A., Quereda, J., Rubio-Bollinger, G., Chirolli, L., Silva-Guillén, J. A., Agraït, N., Steele, G. A., Guinea, F., van der Zant, H. S. J., & Coronado, E. (2016). Enhanced superconductivity in atomically thin TaS2. Nature Communications, 7(1).

Authors 14
  1. Efrén Navarro-Moratalla (first)
  2. Joshua O. Island (additional)
  3. Samuel Mañas-Valero (additional)
  4. Elena Pinilla-Cienfuegos (additional)
  5. Andres Castellanos-Gomez (additional)
  6. Jorge Quereda (additional)
  7. Gabino Rubio-Bollinger (additional)
  8. Luca Chirolli (additional)
  9. Jose Angel Silva-Guillén (additional)
  10. Nicolás Agraït (additional)
  11. Gary A. Steele (additional)
  12. Francisco Guinea (additional)
  13. Herre S. J. van der Zant (additional)
  14. Eugenio Coronado (additional)
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Dates
Type When
Created 9 years, 5 months ago (March 17, 2016, 6:06 a.m.)
Deposited 2 years, 7 months ago (Jan. 4, 2023, 6:40 a.m.)
Indexed 20 minutes ago (Aug. 21, 2025, 6:32 a.m.)
Issued 9 years, 5 months ago (March 17, 2016)
Published 9 years, 5 months ago (March 17, 2016)
Published Online 9 years, 5 months ago (March 17, 2016)
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@article{Navarro_Moratalla_2016, title={Enhanced superconductivity in atomically thin TaS2}, volume={7}, ISSN={2041-1723}, url={http://dx.doi.org/10.1038/ncomms11043}, DOI={10.1038/ncomms11043}, number={1}, journal={Nature Communications}, publisher={Springer Science and Business Media LLC}, author={Navarro-Moratalla, Efrén and Island, Joshua O. and Mañas-Valero, Samuel and Pinilla-Cienfuegos, Elena and Castellanos-Gomez, Andres and Quereda, Jorge and Rubio-Bollinger, Gabino and Chirolli, Luca and Silva-Guillén, Jose Angel and Agraït, Nicolás and Steele, Gary A. and Guinea, Francisco and van der Zant, Herre S. J. and Coronado, Eugenio}, year={2016}, month=mar }