Superconductor-insulator transition driven by pressure-tuned intergrain coupling in nanodiamond films

Gufei Zhang; Yonghui Zhou; Svetlana Korneychuk; Tomas Samuely; Liwang Liu; Paul W. May; Zheng Xu; Oleksandr Onufriienko; Xuefeng Zhang; Johan Verbeeck; Peter Samuely; Victor V. Moshchalkov; Zhaorong Yang; Horst Günter Rubahn

doi:10.1103/PhysRevMaterials.3.034801

Superconductor-insulator transition driven by pressure-tuned intergrain coupling in nanodiamond films

Gufei Zhang, Yonghui Zhou, Svetlana Korneychuk, Tomas Samuely, Liwang Liu, Paul W. May, Zheng Xu, Oleksandr Onufriienko, Xuefeng Zhang, Johan Verbeeck, Peter Samuely, Victor V. Moshchalkov, Zhaorong Yang, Horst Günter Rubahn

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Abstract

We report on the pressure-driven superconductor-insulator transition in heavily boron-doped nanodiamond films. By systematically increasing the pressure, we suppress the Josephson coupling between the superconducting nanodiamond grains. The diminished intergrain coupling gives rise to an overall insulating state in the films, which is interpreted in the framework of a parallel-series circuit model to be the result of bosonic insulators with preserved localized intragrain superconducting order parameters. Our investigation opens up perspectives for the application of high pressure in research on quantum confinement and coherence. Our data unveil the percolative nature of the electrical transport in nanodiamond films, and highlight the essential role of grain boundaries in determining the electronic properties of this material.

Original language	English
Article number	034801
Number of pages	9
Journal	Physical Review Materials
Volume	3
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevMaterials.3.034801
Publication status	Published - 5 Mar 2019

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Physical & Theoretical

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Zhang, G., Zhou, Y., Korneychuk, S., Samuely, T., Liu, L., May, P. W., Xu, Z., Onufriienko, O., Zhang, X., Verbeeck, J., Samuely, P., Moshchalkov, V. V., Yang, Z., & Rubahn, H. G. (2019). Superconductor-insulator transition driven by pressure-tuned intergrain coupling in nanodiamond films. Physical Review Materials, 3(3), Article 034801. https://doi.org/10.1103/PhysRevMaterials.3.034801

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title = "Superconductor-insulator transition driven by pressure-tuned intergrain coupling in nanodiamond films",

abstract = "We report on the pressure-driven superconductor-insulator transition in heavily boron-doped nanodiamond films. By systematically increasing the pressure, we suppress the Josephson coupling between the superconducting nanodiamond grains. The diminished intergrain coupling gives rise to an overall insulating state in the films, which is interpreted in the framework of a parallel-series circuit model to be the result of bosonic insulators with preserved localized intragrain superconducting order parameters. Our investigation opens up perspectives for the application of high pressure in research on quantum confinement and coherence. Our data unveil the percolative nature of the electrical transport in nanodiamond films, and highlight the essential role of grain boundaries in determining the electronic properties of this material.",

author = "Gufei Zhang and Yonghui Zhou and Svetlana Korneychuk and Tomas Samuely and Liwang Liu and May, \{Paul W.\} and Zheng Xu and Oleksandr Onufriienko and Xuefeng Zhang and Johan Verbeeck and Peter Samuely and Moshchalkov, \{Victor V.\} and Zhaorong Yang and Rubahn, \{Horst G{\"u}nter\}",

year = "2019",

month = mar,

day = "5",

doi = "10.1103/PhysRevMaterials.3.034801",

language = "English",

volume = "3",

journal = "Physical Review Materials",

issn = "2475-9953",

publisher = "American Physical Society (APS)",

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T1 - Superconductor-insulator transition driven by pressure-tuned intergrain coupling in nanodiamond films

AU - Zhang, Gufei

AU - Zhou, Yonghui

AU - Korneychuk, Svetlana

AU - Samuely, Tomas

AU - Liu, Liwang

AU - May, Paul W.

AU - Xu, Zheng

AU - Onufriienko, Oleksandr

AU - Zhang, Xuefeng

AU - Verbeeck, Johan

AU - Samuely, Peter

AU - Moshchalkov, Victor V.

AU - Yang, Zhaorong

AU - Rubahn, Horst Günter

PY - 2019/3/5

Y1 - 2019/3/5

N2 - We report on the pressure-driven superconductor-insulator transition in heavily boron-doped nanodiamond films. By systematically increasing the pressure, we suppress the Josephson coupling between the superconducting nanodiamond grains. The diminished intergrain coupling gives rise to an overall insulating state in the films, which is interpreted in the framework of a parallel-series circuit model to be the result of bosonic insulators with preserved localized intragrain superconducting order parameters. Our investigation opens up perspectives for the application of high pressure in research on quantum confinement and coherence. Our data unveil the percolative nature of the electrical transport in nanodiamond films, and highlight the essential role of grain boundaries in determining the electronic properties of this material.

AB - We report on the pressure-driven superconductor-insulator transition in heavily boron-doped nanodiamond films. By systematically increasing the pressure, we suppress the Josephson coupling between the superconducting nanodiamond grains. The diminished intergrain coupling gives rise to an overall insulating state in the films, which is interpreted in the framework of a parallel-series circuit model to be the result of bosonic insulators with preserved localized intragrain superconducting order parameters. Our investigation opens up perspectives for the application of high pressure in research on quantum confinement and coherence. Our data unveil the percolative nature of the electrical transport in nanodiamond films, and highlight the essential role of grain boundaries in determining the electronic properties of this material.

UR - https://www.scopus.com/pages/publications/85062964172

U2 - 10.1103/PhysRevMaterials.3.034801

DO - 10.1103/PhysRevMaterials.3.034801

M3 - Article (Academic Journal)

AN - SCOPUS:85062964172

SN - 2475-9953

VL - 3

JO - Physical Review Materials

JF - Physical Review Materials

IS - 3

M1 - 034801

ER -

Superconductor-insulator transition driven by pressure-tuned intergrain coupling in nanodiamond films

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