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In this work, we present a magnetic field dependent transport study proving that this gap is indeed of superconducting origin. Upon cooling, several drops in resistance are observed in the temperature range between 6\u2009K and 2\u2009K, indicating multiple transitions. Using the Ginzburg-Landau theory, we show that the critical magnetic field of the dominant high-temperature transition at ~ 6\u2009K is governed by orbital Cooper pair breaking in larger FeTe islands, large enough to exceed the superconductive coherence length\n                    <jats:inline-formula>\n                      <jats:alternatives>\n                        <jats:tex-math>$$\\xi$$<\/jats:tex-math>\n                        <mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\">\n                          <mml:mi>\u03be<\/mml:mi>\n                        <\/mml:math>\n                      <\/jats:alternatives>\n                    <\/jats:inline-formula>\n                    . At smaller island sizes, transitions at lower temperatures &lt; 6\u2009K become more prominent, showing significantly increased critical fields dominated by paramagnetic pair breaking. The multiphase superconducting behaviour is in line with an observed wide distribution of FeTe islands width 5\u2013100\u2009nm and seems to reflect disorder effects at the interface to Bi\n                    <jats:sub>2<\/jats:sub>\n                    Te\n                    <jats:sub>3<\/jats:sub>\n                    . The proof of local superconductivity makes the FeTe interface to the topological insulator Bi\n                    <jats:sub>2<\/jats:sub>\n                    Te\n                    <jats:sub>3<\/jats:sub>\n                    substrate a potential host of topological superconductivity.\n                  <\/jats:p>","DOI":"10.1038\/s41699-024-00480-x","type":"journal-article","created":{"date-parts":[[2024,8,8]],"date-time":"2024-08-08T06:03:15Z","timestamp":1723096995000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Multiphase superconductivity at the interface between ultrathin FeTe islands and Bi2Te3"],"prefix":"10.1038","volume":"8","author":[{"given":"V.","family":"Tk\u00e1\u010d","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5884-3292","authenticated-orcid":false,"given":"S.","family":"Vorobiov","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8837-6106","authenticated-orcid":false,"given":"P.","family":"Baloh","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4150-139X","authenticated-orcid":false,"given":"M.","family":"Vondr\u00e1\u010dek","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3133-4815","authenticated-orcid":false,"given":"G.","family":"Springholz","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2275-1986","authenticated-orcid":false,"given":"K.","family":"Carva","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"P.","family":"Szab\u00f3","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7367-5821","authenticated-orcid":false,"given":"Ph.","family":"Hofmann","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9822-1263","authenticated-orcid":false,"given":"J.","family":"Honolka","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2024,8,8]]},"reference":[{"key":"480_CR1","doi-asserted-by":"publisher","first-page":"1057","DOI":"10.1103\/RevModPhys.83.1057","volume":"83","author":"X-L Qi","year":"2011","unstructured":"Qi, X.-L. & Zhang, S.-C. 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