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Enhanced superconductivity in atomically thin TaS2

Author

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  • Efrén Navarro-Moratalla

    (Universidad de Valencia (ICMol), Catedrático José Beltrán Martínez n° 2
    Present address: Department of Physics, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, USA)

  • Joshua O. Island

    (Kavli Institute of Nanoscience, Delft University of Technology)

  • Samuel Mañas-Valero

    (Universidad de Valencia (ICMol), Catedrático José Beltrán Martínez n° 2)

  • Elena Pinilla-Cienfuegos

    (Universidad de Valencia (ICMol), Catedrático José Beltrán Martínez n° 2
    Present address: Valencia Nanophotonics Technology Center, Building 8F|1st Floor, Universidad Politécnica de Valencia, Camí de Vera, s/n, 46022 Valencia, Spain)

  • Andres Castellanos-Gomez

    (Kavli Institute of Nanoscience, Delft University of Technology
    Present address: Instituto Madrileño de Estudios Avanzados en Nanociencia (IMDEA- Nanociencia), Calle Farady 9, Cantoblanco 28049 Madrid, Spain)

  • Jorge Quereda

    (Universidad Autónoma de Madrid, Campus de Cantoblanco)

  • Gabino Rubio-Bollinger

    (Universidad Autónoma de Madrid, Campus de Cantoblanco
    Condensed Matter Physics Center (IFIMAC), Universidad Autónoma de Madrid)

  • Luca Chirolli

    (Instituto Madrileño de Estudios Avanzados en Nanociencia (IMDEA- Nanociencia))

  • Jose Angel Silva-Guillén

    (Instituto Madrileño de Estudios Avanzados en Nanociencia (IMDEA- Nanociencia))

  • Nicolás Agraït

    (Universidad Autónoma de Madrid, Campus de Cantoblanco
    Condensed Matter Physics Center (IFIMAC), Universidad Autónoma de Madrid
    Instituto Madrileño de Estudios Avanzados en Nanociencia (IMDEA- Nanociencia))

  • Gary A. Steele

    (Kavli Institute of Nanoscience, Delft University of Technology)

  • Francisco Guinea

    (Instituto Madrileño de Estudios Avanzados en Nanociencia (IMDEA- Nanociencia))

  • Herre S. J. van der Zant

    (Kavli Institute of Nanoscience, Delft University of Technology)

  • Eugenio Coronado

    (Universidad de Valencia (ICMol), Catedrático José Beltrán Martínez n° 2)

Abstract

The 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.

Suggested Citation

  • Efrén Navarro-Moratalla & Joshua O. Island & Samuel Mañas-Valero & Elena Pinilla-Cienfuegos & Andres Castellanos-Gomez & Jorge Quereda & Gabino Rubio-Bollinger & Luca Chirolli & Jose Angel Silva-Guill, 2016. "Enhanced superconductivity in atomically thin TaS2," Nature Communications, Nature, vol. 7(1), pages 1-7, April.
  • Handle: RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms11043
    DOI: 10.1038/ncomms11043
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    Cited by:

    1. Yuki Tokumoto & Kotaro Hamano & Sunao Nakagawa & Yasushi Kamimura & Shintaro Suzuki & Ryuji Tamura & Keiichi Edagawa, 2024. "Superconductivity in a van der Waals layered quasicrystal," Nature Communications, Nature, vol. 15(1), pages 1-7, December.
    2. Alexander Jarjour & G. M. Ferguson & Brian T. Schaefer & Menyoung Lee & Yen Lee Loh & Nandini Trivedi & Katja C. Nowack, 2023. "Superfluid response of an atomically thin gate-tuned van der Waals superconductor," Nature Communications, Nature, vol. 14(1), pages 1-8, December.
    3. Boqin Song & Tianping Ying & Xianxin Wu & Wei Xia & Qiangwei Yin & Qinghua Zhang & Yanpeng Song & Xiaofan Yang & Jiangang Guo & Lin Gu & Xiaolong Chen & Jiangping Hu & Andreas P. Schnyder & Hechang Le, 2023. "Anomalous enhancement of charge density wave in kagome superconductor CsV3Sb5 approaching the 2D limit," Nature Communications, Nature, vol. 14(1), pages 1-9, December.
    4. Suk Hyun Sung & Noah Schnitzer & Steve Novakov & Ismail El Baggari & Xiangpeng Luo & Jiseok Gim & Nguyen M. Vu & Zidong Li & Todd H. Brintlinger & Yu Liu & Wenjian Lu & Yuping Sun & Parag B. Deotare &, 2022. "Two-dimensional charge order stabilized in clean polytype heterostructures," Nature Communications, Nature, vol. 13(1), pages 1-7, December.
    5. Qianqian He & Kunpeng Si & Zian Xu & Xingguo Wang & Chunqiao Jin & Yahan Yang & Juntian Wei & Lingjia Meng & Pengbo Zhai & Peng Zhang & Peizhe Tang & Yongji Gong, 2024. "Direct synthesis of controllable ultrathin heteroatoms-intercalated 2D layered materials," Nature Communications, Nature, vol. 15(1), pages 1-10, December.
    6. Suk Hyun Sung & Nishkarsh Agarwal & Ismail El Baggari & Patrick Kezer & Yin Min Goh & Noah Schnitzer & Jeremy M. Shen & Tony Chiang & Yu Liu & Wenjian Lu & Yuping Sun & Lena F. Kourkoutis & John T. He, 2024. "Endotaxial stabilization of 2D charge density waves with long-range order," Nature Communications, Nature, vol. 15(1), pages 1-8, December.

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