Subkelvin tunneling spectroscopy showing Bardeen-Cooper-Schrieffer superconductivity in heavily boron-doped silicon epilayers

F. Dahlem; T. Kociniewski; C. Marcenat; A. Grockowiak; L. M.A. Pascal; P. Achatz; J. Boulmer; D. Débarre; T. Klein; E. Bustarret; H. Courtois

doi:10.1103/PhysRevB.82.140505

Subkelvin tunneling spectroscopy showing Bardeen-Cooper-Schrieffer superconductivity in heavily boron-doped silicon epilayers

F. Dahlem
, T. Kociniewski
, C. Marcenat
, A. Grockowiak
, L. M.A. Pascal
, P. Achatz
, J. Boulmer
, D. Débarre
, T. Klein
, E. Bustarret
, H. Courtois

École Polytechnique

Research output: Contribution to journal › Article › peer-review

Abstract

Scanning tunneling spectroscopies in the subkelvin temperature range were performed on superconducting silicon epilayers doped with boron in the atomic percent range. The resulting local differential conductance behaved as expected for a homogeneous superconductor, with an energy-gap dispersion below ±10%. The spectral shape, the amplitude, and temperature dependence of the superconductivity gap follow the BCS model, bringing support to the hypothesis of a hole pairing mechanism mediated by phonons in the weak-coupling limit.

Original language	English
Article number	140505
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	82
Issue number	14
DOIs	https://doi.org/10.1103/PhysRevB.82.140505
Publication status	Published - 20 Oct 2010

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Dahlem, F., Kociniewski, T., Marcenat, C., Grockowiak, A., Pascal, L. M. A., Achatz, P., Boulmer, J., Débarre, D., Klein, T., Bustarret, E., & Courtois, H. (2010). Subkelvin tunneling spectroscopy showing Bardeen-Cooper-Schrieffer superconductivity in heavily boron-doped silicon epilayers. Physical Review B - Condensed Matter and Materials Physics, 82(14), Article 140505. https://doi.org/10.1103/PhysRevB.82.140505

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abstract = "Scanning tunneling spectroscopies in the subkelvin temperature range were performed on superconducting silicon epilayers doped with boron in the atomic percent range. The resulting local differential conductance behaved as expected for a homogeneous superconductor, with an energy-gap dispersion below ±10\%. The spectral shape, the amplitude, and temperature dependence of the superconductivity gap follow the BCS model, bringing support to the hypothesis of a hole pairing mechanism mediated by phonons in the weak-coupling limit.",

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doi = "10.1103/PhysRevB.82.140505",

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Dahlem, F, Kociniewski, T, Marcenat, C, Grockowiak, A, Pascal, LMA, Achatz, P, Boulmer, J, Débarre, D, Klein, T, Bustarret, E & Courtois, H 2010, 'Subkelvin tunneling spectroscopy showing Bardeen-Cooper-Schrieffer superconductivity in heavily boron-doped silicon epilayers', Physical Review B - Condensed Matter and Materials Physics, vol. 82, no. 14, 140505. https://doi.org/10.1103/PhysRevB.82.140505

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T1 - Subkelvin tunneling spectroscopy showing Bardeen-Cooper-Schrieffer superconductivity in heavily boron-doped silicon epilayers

AU - Dahlem, F.

AU - Kociniewski, T.

AU - Marcenat, C.

AU - Grockowiak, A.

AU - Pascal, L. M.A.

AU - Achatz, P.

AU - Boulmer, J.

AU - Débarre, D.

AU - Klein, T.

AU - Bustarret, E.

AU - Courtois, H.

PY - 2010/10/20

Y1 - 2010/10/20

N2 - Scanning tunneling spectroscopies in the subkelvin temperature range were performed on superconducting silicon epilayers doped with boron in the atomic percent range. The resulting local differential conductance behaved as expected for a homogeneous superconductor, with an energy-gap dispersion below ±10%. The spectral shape, the amplitude, and temperature dependence of the superconductivity gap follow the BCS model, bringing support to the hypothesis of a hole pairing mechanism mediated by phonons in the weak-coupling limit.

AB - Scanning tunneling spectroscopies in the subkelvin temperature range were performed on superconducting silicon epilayers doped with boron in the atomic percent range. The resulting local differential conductance behaved as expected for a homogeneous superconductor, with an energy-gap dispersion below ±10%. The spectral shape, the amplitude, and temperature dependence of the superconductivity gap follow the BCS model, bringing support to the hypothesis of a hole pairing mechanism mediated by phonons in the weak-coupling limit.

U2 - 10.1103/PhysRevB.82.140505

DO - 10.1103/PhysRevB.82.140505

M3 - Article

AN - SCOPUS:78049453777

SN - 1098-0121

VL - 82

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 14

M1 - 140505

ER -

Subkelvin tunneling spectroscopy showing Bardeen-Cooper-Schrieffer superconductivity in heavily boron-doped silicon epilayers

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