{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,11,6]],"date-time":"2026-11-06T14:54:04Z","timestamp":1793976844696,"version":"4.8.0"},"reference-count":37,"publisher":"IOP Publishing","issue":"2","license":[{"start":{"date-parts":[[2024,1,25]],"date-time":"2024-01-25T00:00:00Z","timestamp":1706140800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/iopscience.iop.org\/page\/copyright"},{"start":{"date-parts":[[2024,1,25]],"date-time":"2024-01-25T00:00:00Z","timestamp":1706140800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/iopscience.iop.org\/info\/page\/text-and-data-mining"}],"funder":[{"name":"AFOSR MURI 2D MAGIC","award":["FA9550-19-1-0390"],"award-info":[{"award-number":["FA9550-19-1-0390"]}]},{"DOI":"10.13039\/100006151","name":"Basic Energy Sciences","doi-asserted-by":"crossref","award":["DE-SC0016379"],"award-info":[{"award-number":["DE-SC0016379"]}],"id":[{"id":"10.13039\/100006151","id-type":"DOI","asserted-by":"crossref"}]}],"content-domain":{"domain":["iopscience.iop.org"],"crossmark-restriction":false},"short-container-title":["2D Mater."],"published-print":{"date-parts":[[2024,4,1]]},"abstract":"<jats:title>Abstract<\/jats:title>\n               <jats:p>Introducing magnetism to the surface state of topological insulators, such as Bi<jats:sub>2<\/jats:sub>Te<jats:sub>3<\/jats:sub>, can lead to a variety of interesting phenomena. We use scanning tunneling microscopy (STM) to study a single quintuple layer (QL) of the van der Waals magnet Fe<jats:sub>3<\/jats:sub>GeTe<jats:sub>2<\/jats:sub> (FGT) that is grown on Bi<jats:sub>2<\/jats:sub>Te<jats:sub>3<\/jats:sub> via molecular beam epitaxy. STM topographic images show that the FGT grows as free-standing islands on Bi<jats:sub>2<\/jats:sub>Te<jats:sub>3<\/jats:sub> and outwards from Bi<jats:sub>2<\/jats:sub>Te<jats:sub>3<\/jats:sub> steps. Atomic resolution imaging shows triangular lattices of 390 \u00b1 10 pm for FGT and 430 \u00b1 10 pm for Bi<jats:sub>2<\/jats:sub>Te<jats:sub>3<\/jats:sub>, consistent with the respective bulk crystals. A moir\u00e9 pattern is observed on FGT regions with a periodicity of 4.3 \u00b1 0.4 nm that can be attributed solely to this lattice mismatch and thus indicates zero rotational misalignment. While most of the surface is covered by a single QL of the FGT, there are small double QL regions, as well as regions with distinct chemical terminations due to an incomplete QL. The most common partial QL surface termination is the FeGe layer, in which the top two atomic layers are missing. This termination has a distinctive electronic structure and a <jats:inline-formula>\n                     <jats:tex-math\/>\n                     <mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" overflow=\"scroll\">\n                        <mml:mfenced close=\")\" open=\"(\">\n                           <mml:mrow>\n                              <mml:msqrt>\n                                 <mml:mn>3<\/mml:mn>\n                              <\/mml:msqrt>\n                              <mml:mrow>\n                                 <mml:mtext>\u2009<\/mml:mtext>\n                              <\/mml:mrow>\n                              <mml:mi>x<\/mml:mi>\n                              <mml:mrow>\n                                 <mml:mtext>\u2009<\/mml:mtext>\n                              <\/mml:mrow>\n                              <mml:msqrt>\n                                 <mml:mn>3<\/mml:mn>\n                              <\/mml:msqrt>\n                           <\/mml:mrow>\n                        <\/mml:mfenced>\n                        <mml:mi>R<\/mml:mi>\n                        <mml:mrow>\n                           <mml:msup>\n                              <mml:mn>30<\/mml:mn>\n                              <mml:mo>\u2218<\/mml:mo>\n                           <\/mml:msup>\n                        <\/mml:mrow>\n                     <\/mml:math>\n                  \n                  <\/jats:inline-formula> reconstruction overlaid on the moir\u00e9 pattern in STM images. Magnetic circular dichroism measurements confirm these thin FGT films are ferromagnetic with <jats:italic>T<\/jats:italic>\n                  <jats:sub>C<\/jats:sub> \u223c190 K.<\/jats:p>","DOI":"10.1088\/2053-1583\/ad1c6d","type":"journal-article","created":{"date-parts":[[2024,1,9]],"date-time":"2024-01-09T22:22:40Z","timestamp":1704838960000},"page":"025012","update-policy":"https:\/\/doi.org\/10.1088\/crossmark-policy","source":"Crossref","is-referenced-by-count":2,"title":["Scanning tunneling microscopy study of epitaxial Fe<sub>3<\/sub>GeTe<sub>2<\/sub> monolayers on Bi<sub>2<\/sub>Te<sub>3<\/sub>"],"prefix":"10.1088","volume":"11","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4108-6758","authenticated-orcid":true,"given":"Brad M","family":"Goff","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wenyi","family":"Zhou","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Alexander J","family":"Bishop","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ryan","family":"Bailey-Crandell","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Katherine","family":"Robinson","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0245-9192","authenticated-orcid":true,"given":"Roland K","family":"Kawakami","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3908-7719","authenticated-orcid":true,"given":"Jay A","family":"Gupta","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"266","published-online":{"date-parts":[[2024,1,25]]},"reference":[{"key":"tdmad1c6dbib1","doi-asserted-by":"publisher","first-page":"15","DOI":"10.1038\/s41563-021-01138-5","article-title":"Topological spintronics and magnetoelectronics","volume":"21","author":"He","year":"2022","journal-title":"Nat. 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All rights, including for text and data mining, AI training, and similar technologies, are reserved.","name":"copyright_information","label":"Copyright Information"},{"value":"2023-02-17","name":"date_received","label":"Date Received","group":{"name":"publication_dates","label":"Publication dates"}},{"value":"2024-01-09","name":"date_accepted","label":"Date Accepted","group":{"name":"publication_dates","label":"Publication dates"}},{"value":"2024-01-25","name":"date_epub","label":"Online publication date","group":{"name":"publication_dates","label":"Publication dates"}}]}}