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Motivated by this, we use density functional theory (DFT) and dynamical mean-field theory (DMFT) to identify two infinite-layer fluorides\u2014KNiF\n                    <jats:sub>2<\/jats:sub>\n                    and KPdF\n                    <jats:sub>2<\/jats:sub>\n                    \u2014as promising candidates. Both materials exhibit strong correlations, structural stability, a single-band\n                    <jats:inline-formula>\n                      <jats:alternatives>\n                        <jats:tex-math>$${d}_{{x}^{2}-{y}^{2}}$$<\/jats:tex-math>\n                        <mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\">\n                          <mml:msub>\n                            <mml:mrow>\n                              <mml:mi>d<\/mml:mi>\n                            <\/mml:mrow>\n                            <mml:mrow>\n                              <mml:msup>\n                                <mml:mrow>\n                                  <mml:mi>x<\/mml:mi>\n                                <\/mml:mrow>\n                                <mml:mrow>\n                                  <mml:mn>2<\/mml:mn>\n                                <\/mml:mrow>\n                              <\/mml:msup>\n                              <mml:mo>\u2212<\/mml:mo>\n                              <mml:msup>\n                                <mml:mrow>\n                                  <mml:mi>y<\/mml:mi>\n                                <\/mml:mrow>\n                                <mml:mrow>\n                                  <mml:mn>2<\/mml:mn>\n                                <\/mml:mrow>\n                              <\/mml:msup>\n                            <\/mml:mrow>\n                          <\/mml:msub>\n                        <\/mml:math>\n                      <\/jats:alternatives>\n                    <\/jats:inline-formula>\n                    Fermi surface, and an antiferromagnetic Mott insulating state for the undoped parent compound. However, in KNiF\n                    <jats:sub>2<\/jats:sub>\n                    , overly strong correlations suppress spin fluctuations, preventing the electron pairing and superconducting states at finite temperatures. In contrast, KPdF\n                    <jats:sub>2<\/jats:sub>\n                    offers tunable superconducting behavior. Using dynamical vertex approximation (D\u0393A), we show that 20% hole doping on SrTiO\n                    <jats:sub>3<\/jats:sub>\n                    and 10% electron doping on MgO substrate yield superconducting transition temperatures of 65\u2009K and 63\u2009K, respectively, demonstrating the material\u2019s potential through doping and substrate engineering.\n                  <\/jats:p>","DOI":"10.1038\/s41535-025-00831-x","type":"journal-article","created":{"date-parts":[[2026,1,19]],"date-time":"2026-01-19T07:26:33Z","timestamp":1768807593000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Single-band fluorides akin to infinite-layer cuprate superconductors"],"prefix":"10.1038","volume":"11","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-6575-5813","authenticated-orcid":false,"given":"Wenfeng","family":"Wu","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0009-0005-0940-978X","authenticated-orcid":false,"given":"Eric","family":"Jacob","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9002-0827","authenticated-orcid":false,"given":"Viktor","family":"Christiansson","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0009-0006-4153-5193","authenticated-orcid":false,"given":"Ying","family":"Gao","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Zhi","family":"Zeng","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5984-8549","authenticated-orcid":false,"given":"Karsten","family":"Held","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4709-6882","authenticated-orcid":false,"given":"Liang","family":"Si","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","published-online":{"date-parts":[[2026,1,19]]},"reference":[{"key":"831_CR1","doi-asserted-by":"publisher","first-page":"189","DOI":"10.1007\/BF01303701","volume":"64","author":"JG Bednorz","year":"1986","unstructured":"Bednorz, J. 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