Electrodynamics of granular aluminum from superconductor to insulator: Observation of collective superconducting modes

F. Levy-Bertrand; T. Klein; T. Grenet; O. Dupré; A. Benoît; A. Bideaud; O. Bourrion; M. Calvo; A. Catalano; A. Gomez; J. Goupy; L. Grünhaupt; U. V. Luepke; N. Maleeva; F. Valenti; I. M. Pop; A. Monfardini

doi:10.1103/PhysRevB.99.094506

Electrodynamics of granular aluminum from superconductor to insulator: Observation of collective superconducting modes

F. Levy-Bertrand, T. Klein, T. Grenet, O. Dupré, A. Benoît, A. Bideaud, O. Bourrion, M. Calvo, A. Catalano, A. Gomez, J. Goupy, L. Grünhaupt, U. V. Luepke, N. Maleeva, F. Valenti, I. M. Pop, A. Monfardini

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

Abstract

We report on a detailed study of the optical response and Tc-ρ phase diagram (Tc being the superconducting critical temperature and ρ the normal state resistivity of the film) of granular aluminum, combining transport measurements and a high resolution optical spectroscopy technique. The Tc-ρ phase diagram is discussed as resulting from an interplay between the phase stiffness, the Coulomb repulsion, and the superconducting gap Δ. We provide direct evidence for two different types of well resolved subgap absorptions, at ω1≃Δ and at Δω22Δ (decreasing with increasing resistivity).

Original language	English
Article number	094506
Journal	Physical Review B
Volume	99
Issue number	9
DOIs	https://doi.org/10.1103/PhysRevB.99.094506
Publication status	Published - 8 Mar 2019
Externally published	Yes

Access to Document

10.1103/PhysRevB.99.094506

Cite this

Levy-Bertrand, F., Klein, T., Grenet, T., Dupré, O., Benoît, A., Bideaud, A., Bourrion, O., Calvo, M., Catalano, A., Gomez, A., Goupy, J., Grünhaupt, L., Luepke, U. V., Maleeva, N., Valenti, F., Pop, I. M., & Monfardini, A. (2019). Electrodynamics of granular aluminum from superconductor to insulator: Observation of collective superconducting modes. Physical Review B, 99(9), Article 094506. https://doi.org/10.1103/PhysRevB.99.094506

@article{d83f9936c7454aa89e3037443e90357d,

title = "Electrodynamics of granular aluminum from superconductor to insulator: Observation of collective superconducting modes",

abstract = "We report on a detailed study of the optical response and Tc-ρ phase diagram (Tc being the superconducting critical temperature and ρ the normal state resistivity of the film) of granular aluminum, combining transport measurements and a high resolution optical spectroscopy technique. The Tc-ρ phase diagram is discussed as resulting from an interplay between the phase stiffness, the Coulomb repulsion, and the superconducting gap Δ. We provide direct evidence for two different types of well resolved subgap absorptions, at ω1≃Δ and at Δω22Δ (decreasing with increasing resistivity).",

author = "F. Levy-Bertrand and T. Klein and T. Grenet and O. Dupr{\'e} and A. Beno{\^i}t and A. Bideaud and O. Bourrion and M. Calvo and A. Catalano and A. Gomez and J. Goupy and L. Gr{\"u}nhaupt and Luepke, \{U. V.\} and N. Maleeva and F. Valenti and Pop, \{I. M.\} and A. Monfardini",

note = "Publisher Copyright: {\textcopyright} 2019 American Physical Society.",

year = "2019",

month = mar,

day = "8",

doi = "10.1103/PhysRevB.99.094506",

language = "English",

volume = "99",

journal = "Physical Review B",

issn = "2469-9950",

number = "9",

}

Levy-Bertrand, F, Klein, T, Grenet, T, Dupré, O, Benoît, A, Bideaud, A, Bourrion, O, Calvo, M, Catalano, A, Gomez, A, Goupy, J, Grünhaupt, L, Luepke, UV, Maleeva, N, Valenti, F, Pop, IM & Monfardini, A 2019, 'Electrodynamics of granular aluminum from superconductor to insulator: Observation of collective superconducting modes', Physical Review B, vol. 99, no. 9, 094506. https://doi.org/10.1103/PhysRevB.99.094506

TY - JOUR

T1 - Electrodynamics of granular aluminum from superconductor to insulator

T2 - Observation of collective superconducting modes

AU - Levy-Bertrand, F.

AU - Klein, T.

AU - Grenet, T.

AU - Dupré, O.

AU - Benoît, A.

AU - Bideaud, A.

AU - Bourrion, O.

AU - Calvo, M.

AU - Catalano, A.

AU - Gomez, A.

AU - Goupy, J.

AU - Grünhaupt, L.

AU - Luepke, U. V.

AU - Maleeva, N.

AU - Valenti, F.

AU - Pop, I. M.

AU - Monfardini, A.

PY - 2019/3/8

Y1 - 2019/3/8

N2 - We report on a detailed study of the optical response and Tc-ρ phase diagram (Tc being the superconducting critical temperature and ρ the normal state resistivity of the film) of granular aluminum, combining transport measurements and a high resolution optical spectroscopy technique. The Tc-ρ phase diagram is discussed as resulting from an interplay between the phase stiffness, the Coulomb repulsion, and the superconducting gap Δ. We provide direct evidence for two different types of well resolved subgap absorptions, at ω1≃Δ and at Δω22Δ (decreasing with increasing resistivity).

AB - We report on a detailed study of the optical response and Tc-ρ phase diagram (Tc being the superconducting critical temperature and ρ the normal state resistivity of the film) of granular aluminum, combining transport measurements and a high resolution optical spectroscopy technique. The Tc-ρ phase diagram is discussed as resulting from an interplay between the phase stiffness, the Coulomb repulsion, and the superconducting gap Δ. We provide direct evidence for two different types of well resolved subgap absorptions, at ω1≃Δ and at Δω22Δ (decreasing with increasing resistivity).

U2 - 10.1103/PhysRevB.99.094506

DO - 10.1103/PhysRevB.99.094506

M3 - Article

AN - SCOPUS:85062684259

SN - 2469-9950

VL - 99

JO - Physical Review B

JF - Physical Review B

IS - 9

M1 - 094506

ER -

Electrodynamics of granular aluminum from superconductor to insulator: Observation of collective superconducting modes

Abstract

Access to Document

Fingerprint

Cite this