{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,11]],"date-time":"2026-04-11T14:05:08Z","timestamp":1775916308409,"version":"3.50.1"},"reference-count":56,"publisher":"IOP Publishing","issue":"38","license":[{"start":{"date-parts":[[2018,8,28]],"date-time":"2018-08-28T00:00:00Z","timestamp":1535414400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/publishingsupport.iopscience.iop.org\/iop-standard\/v1"},{"start":{"date-parts":[[2018,8,28]],"date-time":"2018-08-28T00:00:00Z","timestamp":1535414400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/iopscience.iop.org\/info\/page\/text-and-data-mining"}],"content-domain":{"domain":["iopscience.iop.org"],"crossmark-restriction":false},"short-container-title":["J. Phys.: Condens. Matter"],"published-print":{"date-parts":[[2018,9,26]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>\n                    We investigated the compound 1T-Cu\n                    <jats:sub>\n                      <jats:italic>x<\/jats:italic>\n                    <\/jats:sub>\n                    Ta\n                    <jats:sub>\n                      1\u2212\n                      <jats:italic>x<\/jats:italic>\n                    <\/jats:sub>\n                    S\n                    <jats:sub>2<\/jats:sub>\n                    with respect to its synthesis, homogeneity range, structure and electronic properties. The average structure of 1T-Cu\n                    <jats:sub>\n                      <jats:italic>x<\/jats:italic>\n                    <\/jats:sub>\n                    Ta\n                    <jats:sub>\n                      1\u2212\n                      <jats:italic>x<\/jats:italic>\n                    <\/jats:sub>\n                    S\n                    <jats:sub>2<\/jats:sub>\n                    resembles that of the high-temperature phase of the layered transition metal dichalcogenide 1T-TaS\n                    <jats:sub>2<\/jats:sub>\n                    in which tantalum is partially substituted by copper. 1T-Cu\n                    <jats:sub>\n                      <jats:italic>x<\/jats:italic>\n                    <\/jats:sub>\n                    Ta\n                    <jats:sub>\n                      1\u2212\n                      <jats:italic>x<\/jats:italic>\n                    <\/jats:sub>\n                    S\n                    <jats:sub>2<\/jats:sub>\n                    readily decomposes at elevated temperatures and can only be prepared and stabilized by a sufficiently high amount of sulfur excess. XPS and NEXAFS measurements reveal that copper has the oxidation state\u2009\u2009+I in 1T-Cu\n                    <jats:sub>\n                      <jats:italic>x<\/jats:italic>\n                    <\/jats:sub>\n                    Ta\n                    <jats:sub>\n                      1\u2212\n                      <jats:italic>x<\/jats:italic>\n                    <\/jats:sub>\n                    S\n                    <jats:sub>2<\/jats:sub>\n                    , which is supported by quantum chemical calculations. The disorder introduced by copper doping causes an Anderson-type localization of the conduction electrons as manifested by a strong increase of the electrical resistivity and a Curie-type paramagnetism at low temperatures as in other doped systems 1T-\n                    <jats:italic>M<\/jats:italic>\n                    <jats:sub>\n                      <jats:italic>x<\/jats:italic>\n                    <\/jats:sub>\n                    Ta\n                    <jats:sub>\n                      1\u2212\n                      <jats:italic>x<\/jats:italic>\n                    <\/jats:sub>\n                    S\n                    <jats:sub>2<\/jats:sub>\n                    with higher valent metals. Quantum chemical calculations support this interpretation.\n                  <\/jats:p>","DOI":"10.1088\/1361-648x\/aad9c6","type":"journal-article","created":{"date-parts":[[2018,8,13]],"date-time":"2018-08-13T08:45:15Z","timestamp":1534149915000},"page":"385501","update-policy":"https:\/\/doi.org\/10.1088\/crossmark-policy","source":"Crossref","is-referenced-by-count":1,"title":["Forcing substitution of tantalum by copper in 1T-TaS\n                    <sub>2<\/sub>\n                    : synthesis, structure and electronic properties of 1T-Cu\n                    <sub>\n                      <i>x<\/i>\n                    <\/sub>\n                    Ta\n                    <sub>\n                      1\u2212\n                      <i>x<\/i>\n                    <\/sub>\n                    S\n                    <sub>2<\/sub>"],"prefix":"10.1088","volume":"30","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-6141-6523","authenticated-orcid":false,"given":"Malte","family":"Sachs","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kirsten","family":"Bohnen","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Matthias","family":"Conrad","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6205-8879","authenticated-orcid":false,"given":"Benedikt P","family":"Klein","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Claudio K","family":"Krug","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Clemens","family":"Pietzonka","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Martin","family":"Schmid","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Steffen","family":"Z\u00f6rb","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5579-2568","authenticated-orcid":false,"given":"J Michael","family":"Gottfried","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Bernd","family":"Harbrecht","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"266","published-online":{"date-parts":[[2018,8,28]]},"reference":[{"key":"cmaad9c6bib001","doi-asserted-by":"publisher","first-page":"14","DOI":"10.1103\/PhysRevB.71.153101","type":"journal-article","volume":"71","author":"Perfetti","year":"2005","journal-title":"Phys. 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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":"2018-06-25","name":"date_received","label":"Date Received","group":{"name":"publication_dates","label":"Publication dates"}},{"value":"2018-08-13","name":"date_accepted","label":"Date Accepted","group":{"name":"publication_dates","label":"Publication dates"}},{"value":"2018-08-28","name":"date_epub","label":"Online publication date","group":{"name":"publication_dates","label":"Publication dates"}}]}}