Disorder-induced suppression of superconductivity in infinite-layer nickelates

Abhishek Ranna; Romain Grasset; Martin Gonzalez; Kyuho Lee; Bai Yang Wang; Edgar Abarca Morales; Florian Theuss; Zuzanna H Filipiak; Michal Moravec; Marcin Konczykowski; Harold Y Hwang; Andrew P Mackenzie; Berit H Goodge

doi:10.1103/7lqb-pjkm

Disorder-induced suppression of superconductivity in infinite-layer nickelates

Abhishek Ranna, Romain Grasset, Martin Gonzalez, Kyuho Lee, Bai Yang Wang, Edgar Abarca Morales, Florian Theuss, Zuzanna H Filipiak, Michal Moravec, Marcin Konczykowski, Harold Y Hwang, Andrew P Mackenzie, Berit H Goodge^*

^*Corresponding author for this work

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

Abstract

The pairing symmetry of superconducting infinite-layer nickelates is a fundamental yet experimentally challenging question. We employ high-energy electron irradiation to induce disorder in superconducting Nd_{0.825}Sr_{0.175}NiO_{2} thin films, examine the impact of pair-breaking defects on superconductivity, and elucidate the nature of the superconducting gap. Our measurements reveal a complete suppression of superconductivity with increasing disorder, suggesting an unconventional, sign-changing order parameter.

Original language	English
Article number	126501
Journal	Physical Review Letters
Volume	135
Issue number	12
Early online date	15 Sept 2025
DOIs	https://doi.org/10.1103/7lqb-pjkm
Publication status	Published - 19 Sept 2025

Access to Document

10.1103/7lqb-pjkmLicence: CC BY

Ranna-et-al-2025-Disorder-induced-suppression-PRL-135-126501-CCBY
Copyright © 2025 The Authors. Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Open access publication funded by the Max Planck Society.
Final published version, 629 KBLicence: CC BY

Handle.net

Persistent link

Cite this

@article{442e3cee40724f84864290a89fcd0b8c,

title = "Disorder-induced suppression of superconductivity in infinite-layer nickelates",

abstract = "The pairing symmetry of superconducting infinite-layer nickelates is a fundamental yet experimentally challenging question. We employ high-energy electron irradiation to induce disorder in superconducting Nd\_\{0.825\}Sr\_\{0.175\}NiO\_\{2\} thin films, examine the impact of pair-breaking defects on superconductivity, and elucidate the nature of the superconducting gap. Our measurements reveal a complete suppression of superconductivity with increasing disorder, suggesting an unconventional, sign-changing order parameter.",

author = "Abhishek Ranna and Romain Grasset and Martin Gonzalez and Kyuho Lee and Wang, \{Bai Yang\} and \{Abarca Morales\}, Edgar and Florian Theuss and Filipiak, \{Zuzanna H\} and Michal Moravec and Marcin Konczykowski and Hwang, \{Harold Y\} and Mackenzie, \{Andrew P\} and Goodge, \{Berit H\}",

note = "Funding: This work was supported by the Max Planck Society. B. H. G. was supported by Schmidt Science Fellows in partnership with the Rhodes Trust. Work at SLAC and Stanford was supported by the U.S. Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering (Contract No. DE-AC02-76SF00515). Work at {\'E}cole Polytechnique was supported by “Investissements d{\textquoteright}Avenir” LabEx PALM (Grant No. ANR10-LABX- 0039-PALM). The authors acknowledge support from the EMIR\&A French Network (FR CNRS 3618) on the platform SIRIUS.",

year = "2025",

month = sep,

day = "19",

doi = "10.1103/7lqb-pjkm",

language = "English",

volume = "135",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "12",

}

TY - JOUR

T1 - Disorder-induced suppression of superconductivity in infinite-layer nickelates

AU - Ranna, Abhishek

AU - Grasset, Romain

AU - Gonzalez, Martin

AU - Lee, Kyuho

AU - Wang, Bai Yang

AU - Abarca Morales, Edgar

AU - Theuss, Florian

AU - Filipiak, Zuzanna H

AU - Moravec, Michal

AU - Konczykowski, Marcin

AU - Hwang, Harold Y

AU - Mackenzie, Andrew P

AU - Goodge, Berit H

N1 - Funding: This work was supported by the Max Planck Society. B. H. G. was supported by Schmidt Science Fellows in partnership with the Rhodes Trust. Work at SLAC and Stanford was supported by the U.S. Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering (Contract No. DE-AC02-76SF00515). Work at École Polytechnique was supported by “Investissements d’Avenir” LabEx PALM (Grant No. ANR10-LABX- 0039-PALM). The authors acknowledge support from the EMIR&A French Network (FR CNRS 3618) on the platform SIRIUS.

PY - 2025/9/19

Y1 - 2025/9/19

N2 - The pairing symmetry of superconducting infinite-layer nickelates is a fundamental yet experimentally challenging question. We employ high-energy electron irradiation to induce disorder in superconducting Nd_{0.825}Sr_{0.175}NiO_{2} thin films, examine the impact of pair-breaking defects on superconductivity, and elucidate the nature of the superconducting gap. Our measurements reveal a complete suppression of superconductivity with increasing disorder, suggesting an unconventional, sign-changing order parameter.

AB - The pairing symmetry of superconducting infinite-layer nickelates is a fundamental yet experimentally challenging question. We employ high-energy electron irradiation to induce disorder in superconducting Nd_{0.825}Sr_{0.175}NiO_{2} thin films, examine the impact of pair-breaking defects on superconductivity, and elucidate the nature of the superconducting gap. Our measurements reveal a complete suppression of superconductivity with increasing disorder, suggesting an unconventional, sign-changing order parameter.

U2 - 10.1103/7lqb-pjkm

DO - 10.1103/7lqb-pjkm

M3 - Article

C2 - 41046393

SN - 0031-9007

VL - 135

JO - Physical Review Letters

JF - Physical Review Letters

IS - 12

M1 - 126501

ER -

Disorder-induced suppression of superconductivity in infinite-layer nickelates

Abstract

Access to Document

Handle.net

Fingerprint

Cite this