Article Controllable suppression of the unconventional superconductivity in bulk and thin-film Sr2RuO4 via high-energy electron irradiation

Jacob P. Ruf ORCID ; Hilary M. L. Noad ORCID ; Romain Grasset ORCID ; Ludi Miao ORCID ; Elina Zhakina ; Philippa H. McGuinness ORCID ; Hari P. Nair ; Nathaniel J. Schreiber ; Naoki Kikugawa SAMURAI ORCID ; Dmitry Sokolov ORCID ; Marcin Konczykowski ; Darrell G. Schlom ORCID ; Kyle M. Shen ; Andrew P. Mackenzie ORCID

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Citation
Jacob P. Ruf, Hilary M. L. Noad, Romain Grasset, Ludi Miao, Elina Zhakina, Philippa H. McGuinness, Hari P. Nair, Nathaniel J. Schreiber, Naoki Kikugawa, Dmitry Sokolov, Marcin Konczykowski, Darrell G. Schlom, Kyle M. Shen, Andrew P. Mackenzie. Controllable suppression of the unconventional superconductivity in bulk and thin-film Sr2RuO4 via high-energy electron irradiation. Physical Review Research. 2024, 6 (3), 033178.
SAMURAI

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(abstract)

In bulk Sr2RuO4, the strong sensitivity of the superconducting transition temperature Tc to nonmagnetic impurities provides robust evidence for a superconducting order parameter that changes sign around the Fermi surface. In superconducting epitaxial thin-film Sr2RuO4, the relationship between Tc and the residual resistivity ρ0, which in bulk samples is taken to be a proxy for the low-temperature elastic scattering rate, is far less clear. Using high-energy electron irradiation to controllably introduce point disorder into bulk single-crystal and thin-film Sr2RuO4, we show that Tc is suppressed in both systems at nearly identical rates. This suggests that part of rho_0 in films comes from defects that do not contribute to superconducting pairbreaking, and establishes a quantitative link between the superconductivity of bulk and thin-film samples.

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Keyword: Sr2RuO4, Bulk and film, irradiation effect

Date published: 2024-08-16

Publisher: American Physical Society (APS)

Journal:

  • Physical Review Research (ISSN: 26431564) vol. 6 issue. 3 033178

Funding:

  • Japan Society for the Promotion of Science London JP18K04715
  • Japan Society for the Promotion of Science London JP21H01033
  • Japan Society for the Promotion of Science London JP22K19093
  • Deutsche Forschungsgemeinschaft 390858490
  • National Science Foundation DMR-2104427
  • National Science Foundation DMR-2039380
  • National Science Foundation NNCI-2025233
  • Air Force Office of Scientific Research FA9550-21-1-0168
  • Gordon and Betty Moore Foundation GBMF3850
  • Gordon and Betty Moore Foundation GBMF9073

Manuscript type: Publisher's version (Version of record)

MDR DOI:

First published URL: https://doi.org/10.1103/physrevresearch.6.033178

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Updated at: 2024-09-03 12:30:09 +0900

Published on MDR: 2024-09-03 12:30:09 +0900

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