Local impedance on a rough surface of a chiral p -wave superconductor

S. V. Bakurskiy, Ya V. Fominov* (Corresponding Author), A. F. Shevchun, Y. Asano, Y. Tanaka, M. Yu Kupriyanov, A. A. Golubov, M. R. Trunin, H. Kashiwaya, S. Kashiwaya, Y. Maeno

*Corresponding author for this work

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Abstract

We develop a self-consistent approach for calculating the local impedance at a rough surface of a chiral p-wave superconductor. Using the quasiclassical Eilenberger-Larkin-Ovchinnikov formalism, we numerically find the pair potential, pairing functions, and the surface density of states taking into account diffusive electronic scattering at the surface. The obtained solutions are then employed for studying the local complex conductivity and surface impedance in the broad range of microwave frequencies (ranging from subgap to above-gap values). We identify anomalous features of the surface impedance caused by generation of odd-frequency superconductivity at the surface. The results are compared with experimental data for Sr2RuO4 and provide a microscopic explanation of the phenomenological two-fluid model suggested earlier to explain anomalous features of the microwave response in this material.

Original languageEnglish
Article number134508
Number of pages16
JournalPhysical Review B
Volume98
Issue number13
DOIs
Publication statusPublished - 18 Oct 2018

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Superconducting materials
impedance
two fluid models
Microwave frequencies
microwave frequencies
Superconductivity
superconductivity
Microwaves
Scattering
formalism
microwaves
conductivity
Fluids
scattering
electronics

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Bakurskiy, S. V., Fominov, Y. V., Shevchun, A. F., Asano, Y., Tanaka, Y., Kupriyanov, M. Y., ... Maeno, Y. (2018). Local impedance on a rough surface of a chiral p -wave superconductor. Physical Review B, 98(13), [134508]. https://doi.org/10.1103/PhysRevB.98.134508
Bakurskiy, S. V. ; Fominov, Ya V. ; Shevchun, A. F. ; Asano, Y. ; Tanaka, Y. ; Kupriyanov, M. Yu ; Golubov, A. A. ; Trunin, M. R. ; Kashiwaya, H. ; Kashiwaya, S. ; Maeno, Y. / Local impedance on a rough surface of a chiral p -wave superconductor. In: Physical Review B. 2018 ; Vol. 98, No. 13.
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author = "Bakurskiy, {S. V.} and Fominov, {Ya V.} and Shevchun, {A. F.} and Y. Asano and Y. Tanaka and Kupriyanov, {M. Yu} and Golubov, {A. A.} and Trunin, {M. R.} and H. Kashiwaya and S. Kashiwaya and Y. Maeno",
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Bakurskiy, SV, Fominov, YV, Shevchun, AF, Asano, Y, Tanaka, Y, Kupriyanov, MY, Golubov, AA, Trunin, MR, Kashiwaya, H, Kashiwaya, S & Maeno, Y 2018, 'Local impedance on a rough surface of a chiral p -wave superconductor', Physical Review B, vol. 98, no. 13, 134508. https://doi.org/10.1103/PhysRevB.98.134508

Local impedance on a rough surface of a chiral p -wave superconductor. / Bakurskiy, S. V.; Fominov, Ya V. (Corresponding Author); Shevchun, A. F.; Asano, Y.; Tanaka, Y.; Kupriyanov, M. Yu; Golubov, A. A.; Trunin, M. R.; Kashiwaya, H.; Kashiwaya, S.; Maeno, Y.

In: Physical Review B, Vol. 98, No. 13, 134508, 18.10.2018.

Research output: Contribution to journalArticleAcademicpeer-review

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AU - Bakurskiy, S. V.

AU - Fominov, Ya V.

AU - Shevchun, A. F.

AU - Asano, Y.

AU - Tanaka, Y.

AU - Kupriyanov, M. Yu

AU - Golubov, A. A.

AU - Trunin, M. R.

AU - Kashiwaya, H.

AU - Kashiwaya, S.

AU - Maeno, Y.

PY - 2018/10/18

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N2 - We develop a self-consistent approach for calculating the local impedance at a rough surface of a chiral p-wave superconductor. Using the quasiclassical Eilenberger-Larkin-Ovchinnikov formalism, we numerically find the pair potential, pairing functions, and the surface density of states taking into account diffusive electronic scattering at the surface. The obtained solutions are then employed for studying the local complex conductivity and surface impedance in the broad range of microwave frequencies (ranging from subgap to above-gap values). We identify anomalous features of the surface impedance caused by generation of odd-frequency superconductivity at the surface. The results are compared with experimental data for Sr2RuO4 and provide a microscopic explanation of the phenomenological two-fluid model suggested earlier to explain anomalous features of the microwave response in this material.

AB - We develop a self-consistent approach for calculating the local impedance at a rough surface of a chiral p-wave superconductor. Using the quasiclassical Eilenberger-Larkin-Ovchinnikov formalism, we numerically find the pair potential, pairing functions, and the surface density of states taking into account diffusive electronic scattering at the surface. The obtained solutions are then employed for studying the local complex conductivity and surface impedance in the broad range of microwave frequencies (ranging from subgap to above-gap values). We identify anomalous features of the surface impedance caused by generation of odd-frequency superconductivity at the surface. The results are compared with experimental data for Sr2RuO4 and provide a microscopic explanation of the phenomenological two-fluid model suggested earlier to explain anomalous features of the microwave response in this material.

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Bakurskiy SV, Fominov YV, Shevchun AF, Asano Y, Tanaka Y, Kupriyanov MY et al. Local impedance on a rough surface of a chiral p -wave superconductor. Physical Review B. 2018 Oct 18;98(13). 134508. https://doi.org/10.1103/PhysRevB.98.134508