Superconductivity at 38 K in an electrochemical interface between ionic liquid and Fe(Se0.8Te0.2) on various substrates

Kouno, Shunsuke; Sato, Yohei; Katayama, Yumiko; Ichinose, Ataru; Asami, Daisuke; Nabeshima, Fuyuki; Imai, Yoshio; Maeda, Akiko; Ueno, Kazunori

doi:10.48550/arxiv.1805.02380

2018

DOI: 10.48550/arxiv.1805.02380

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Superconductivity at 38 K in an electrochemical interface between ionic liquid and Fe(Se0.8Te0.2) on various substrates

Shunsuke Kouno¹,

Yohei Sato²,

Yumiko Katayama³

et al.

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“…We disentangle the charge transport of the gateinduced AL at the surface from the predominant bulk contribution through the method described in Ref. [33]. For each value of V G , we define the sheet conductance of the AL, σ AL (T ), as the difference between the total sheet conductance of the film, σ s (T ), at finite V G and at V G = 0:…”

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confidence: 99%

Towards the insulator-to-metal transition at the surface of ion-gated nanocrystalline diamond films

Piatti

Galanti

Pippione

et al. 2019

Eur. Phys. J. Spec. Top.

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Hole doping can control the conductivity of diamond either through boron substitution, or carrier accumulation in a field-effect transistor. In this work, we combine the two methods to investigate the insulator-to-metal transition at the surface of nanocrystalline diamond films. The finite boron doping strongly increases the maximum hole density which can be induced electrostatically with respect to intrinsic diamond. The ionic gate pushes the conductivity of the film surface away from the variable-range hopping regime and into the quantum critical regime. However, the combination of the strong intrinsic surface disorder due to a non-negligible surface roughness, and the introduction of extra scattering centers by the ionic gate, prevents the surface accumulation layer to reach the metallic regime.

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mentioning

confidence: 99%

Towards the insulator-to-metal transition at the surface of ion-gated nanocrystalline diamond films

Piatti

Galanti

Pippione

et al. 2019

Eur. Phys. J. Spec. Top.

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Superconductivity at 38 K in an electrochemical interface between ionic liquid and Fe(Se0.8Te0.2) on various substrates

Cited by 1 publication

References 0 publications

Towards the insulator-to-metal transition at the surface of ion-gated nanocrystalline diamond films

Towards the insulator-to-metal transition at the surface of ion-gated nanocrystalline diamond films

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