{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,23]],"date-time":"2026-08-23T18:05:42Z","timestamp":1787508342322,"version":"build-2736575974"},"reference-count":27,"publisher":"American Physical Society (APS)","issue":"2","license":[{"start":{"date-parts":[[2024,1,12]],"date-time":"2024-01-12T00:00:00Z","timestamp":1705017600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100000781","name":"European Research Council","doi-asserted-by":"publisher","award":["715262"],"award-info":[{"award-number":["715262"]}],"id":[{"id":"10.13039\/501100000781","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100000266","name":"Engineering and Physical Sciences Research Council","doi-asserted-by":"publisher","award":["EP\/V048759\/1"],"award-info":[{"award-number":["EP\/V048759\/1"]}],"id":[{"id":"10.13039\/501100000266","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["journals.aps.org"],"crossmark-restriction":true},"short-container-title":["Phys. Rev. B"],"accepted":{"date-parts":[[2023,12,8]]},"abstract":"<jats:p>\n                    High-temperature superconductivity has been observed in binary hydrides such as\n                    <a:math xmlns:a=\"http:\/\/www.w3.org\/1998\/Math\/MathML\">\n                      <a:msub>\n                        <a:mi>LaH<\/a:mi>\n                        <a:mn>10<\/a:mn>\n                      <\/a:msub>\n                    <\/a:math>\n                    at pressures close to\n                    <b:math xmlns:b=\"http:\/\/www.w3.org\/1998\/Math\/MathML\">\n                      <b:mrow>\n                        <b:mn>180<\/b:mn>\n                        <b:mspace width=\"0.16em\"\/>\n                        <b:mi mathvariant=\"normal\">G<\/b:mi>\n                        <b:mi>Pa<\/b:mi>\n                      <\/b:mrow>\n                    <\/b:math>\n                    , whereby hydrogen cagelike structures have been identified as a common motif beneficial for high critical temperatures\n                    <e:math xmlns:e=\"http:\/\/www.w3.org\/1998\/Math\/MathML\">\n                      <e:msub>\n                        <e:mi>T<\/e:mi>\n                        <e:mtext>c<\/e:mtext>\n                      <\/e:msub>\n                    <\/e:math>\n                    . Efforts are now focused on finding hydride high-temperature superconductors at lower pressures. We present evidence for high-temperature superconductivity in binary\n                    <f:math xmlns:f=\"http:\/\/www.w3.org\/1998\/Math\/MathML\">\n                      <f:mrow>\n                        <f:msub>\n                          <f:mi>La<\/f:mi>\n                          <f:mn>4<\/f:mn>\n                        <\/f:msub>\n                        <f:msub>\n                          <f:mi mathvariant=\"normal\">H<\/f:mi>\n                          <f:mn>23<\/f:mn>\n                        <\/f:msub>\n                      <\/f:mrow>\n                    <\/f:math>\n                    at a pressure of\n                    <h:math xmlns:h=\"http:\/\/www.w3.org\/1998\/Math\/MathML\">\n                      <h:mrow>\n                        <h:mi>P<\/h:mi>\n                        <h:mo>=<\/h:mo>\n                        <h:mn>95<\/h:mn>\n                        <h:mspace width=\"0.16em\"\/>\n                        <h:mi mathvariant=\"normal\">G<\/h:mi>\n                        <h:mi>Pa<\/h:mi>\n                      <\/h:mrow>\n                    <\/h:math>\n                    , with A15-type arrangement of the lanthanum atoms in the type-I clathrate structure. We synthesize\n                    <k:math xmlns:k=\"http:\/\/www.w3.org\/1998\/Math\/MathML\">\n                      <k:mrow>\n                        <k:msub>\n                          <k:mi>La<\/k:mi>\n                          <k:mn>4<\/k:mn>\n                        <\/k:msub>\n                        <k:msub>\n                          <k:mi mathvariant=\"normal\">H<\/k:mi>\n                          <k:mn>23<\/k:mn>\n                        <\/k:msub>\n                      <\/k:mrow>\n                    <\/k:math>\n                    from a lanthanum film capped with a palladium catalyst promoting the dissociation of hydrogen. In resistance measurements, we observe superconductivity with a transition temperature\n                    <m:math xmlns:m=\"http:\/\/www.w3.org\/1998\/Math\/MathML\">\n                      <m:mrow>\n                        <m:msub>\n                          <m:mi>T<\/m:mi>\n                          <m:mtext>c<\/m:mtext>\n                        <\/m:msub>\n                        <m:mo>\u223c<\/m:mo>\n                        <m:mn>90<\/m:mn>\n                        <m:mspace width=\"0.16em\"\/>\n                        <m:mi mathvariant=\"normal\">K<\/m:mi>\n                      <\/m:mrow>\n                    <\/m:math>\n                    . The A15-type lanthanum sublattice is identified in x-ray diffraction on the same sample, in agreement with previous x-ray diffraction and structure prediction studies. Our study reinforces the favorability of cagelike networks of the hydrogen lattice for high-temperature superconductivity.\n                  <\/jats:p>\n                  <jats:sec>\n                    <jats:title\/>\n                    <jats:supplementary-material>\n                      <jats:permissions>\n                        <jats:copyright-statement>Published by the American Physical Society<\/jats:copyright-statement>\n                        <jats:copyright-year>2024<\/jats:copyright-year>\n                      <\/jats:permissions>\n                    <\/jats:supplementary-material>\n                  <\/jats:sec>","DOI":"10.1103\/physrevb.109.l020503","type":"journal-article","created":{"date-parts":[[2024,1,12]],"date-time":"2024-01-12T10:40:13Z","timestamp":1705056013000},"update-policy":"https:\/\/doi.org\/10.1103\/crossmark-policy","source":"Crossref","is-referenced-by-count":36,"title":["High-temperature superconductivity in\n                    <mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\">\n                      <mml:mrow>\n                        <mml:msub>\n                          <mml:mi>La<\/mml:mi>\n                          <mml:mn>4<\/mml:mn>\n                        <\/mml:msub>\n                        <mml:msub>\n                          <mml:mi mathvariant=\"normal\">H<\/mml:mi>\n                          <mml:mn>23<\/mml:mn>\n                        <\/mml:msub>\n                      <\/mml:mrow>\n                    <\/mml:math>\n                    below 100 GPa"],"prefix":"10.1103","volume":"109","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-0009-2844","authenticated-orcid":true,"given":"Sam","family":"Cross","sequence":"first","affiliation":[{"name":"HH Wills Laboratory, University of Bristol, Bristol BS8 1TL, United Kingdom"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3519-803X","authenticated-orcid":true,"given":"Jonathan","family":"Buhot","sequence":"additional","affiliation":[{"name":"HH Wills Laboratory, University of Bristol, Bristol BS8 1TL, United Kingdom"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1373-6298","authenticated-orcid":true,"given":"Annabelle","family":"Brooks","sequence":"additional","affiliation":[{"name":"HH Wills Laboratory, University of Bristol, Bristol BS8 1TL, United Kingdom"},{"name":"Diamond Light Source, Chilton, Oxfordshire OX11 0DE, United Kingdom"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0006-0042-047X","authenticated-orcid":true,"given":"William","family":"Thomas","sequence":"additional","affiliation":[{"name":"HH Wills Laboratory, University of Bristol, Bristol BS8 1TL, United Kingdom"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0258-3241","authenticated-orcid":true,"given":"Annette","family":"Kleppe","sequence":"additional","affiliation":[{"name":"Diamond Light Source, Chilton, Oxfordshire OX11 0DE, United Kingdom"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0563-1293","authenticated-orcid":true,"given":"Oliver","family":"Lord","sequence":"additional","affiliation":[{"name":"Department of Earth Sciences, University of Bristol, Bristol BS8 1RJ, United Kingdom"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0606-4991","authenticated-orcid":true,"given":"Sven","family":"Friedemann","sequence":"additional","affiliation":[{"name":"HH Wills Laboratory, University of Bristol, Bristol BS8 1TL, United Kingdom"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"16","published-online":{"date-parts":[[2024,1,12]]},"reference":[{"key":"PhysRevB.109.L020503Cc1R1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevLett.122.027001"},{"key":"PhysRevB.109.L020503Cc2R1","doi-asserted-by":"publisher","DOI":"10.1038\/s41586-019-1201-8"},{"key":"PhysRevB.109.L020503Cc3R1","doi-asserted-by":"publisher","DOI":"10.1038\/s41467-021-25372-2"},{"key":"PhysRevB.109.L020503Cc4R1","doi-asserted-by":"publisher","DOI":"10.1146\/annurev-conmatphys-031218-013413"},{"key":"PhysRevB.109.L020503Cc5R1","doi-asserted-by":"publisher","DOI":"10.1038\/s41467-023-38254-6"},{"key":"PhysRevB.109.L020503Cc6R1","doi-asserted-by":"publisher","DOI":"10.1038\/s41467-022-34755-y"},{"key":"PhysRevB.109.L020503Cc7R1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.jpclett.1c00826"},{"key":"PhysRevB.109.L020503Cc8R1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevB.96.100502"},{"key":"PhysRevB.109.L020503Cc9R1","doi-asserted-by":"publisher","DOI":"10.1016\/j.physrep.2020.02.003"},{"key":"PhysRevB.109.L020503Cc11R1","doi-asserted-by":"publisher","DOI":"10.1007\/s11433-023-2101-9"},{"key":"PhysRevB.109.L020503Cc12R1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.jpclett.0c03331"},{"key":"PhysRevB.109.L020503Cc15R1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevLett.126.117003"},{"key":"PhysRevB.109.L020503Cc17R1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevB.106.134509"},{"key":"PhysRevB.109.L020503Cc18R1","doi-asserted-by":"publisher","DOI":"10.1107\/S0021889808012016"},{"key":"PhysRevB.109.L020503Cc19R1","doi-asserted-by":"publisher","DOI":"10.1038\/nature14964"},{"key":"PhysRevB.109.L020503Cc20R1","doi-asserted-by":"publisher","DOI":"10.1038\/s41586-020-1955-z"},{"key":"PhysRevB.109.L020503Cc21R1","doi-asserted-by":"publisher","DOI":"10.1038\/nature17175"},{"key":"PhysRevB.109.L020503Cc22R1","doi-asserted-by":"publisher","DOI":"10.1088\/0953-2048\/27\/1\/015005"},{"key":"PhysRevB.109.L020503Cc23R1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevB.105.L220502"},{"key":"PhysRevB.109.L020503Cc24R1","doi-asserted-by":"publisher","DOI":"10.1063\/1.2335683"},{"key":"PhysRevB.109.L020503Cc25R1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevB.102.134510"},{"key":"PhysRevB.109.L020503Cc26R1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevB.78.104119"},{"key":"PhysRevB.109.L020503Cc27R1","doi-asserted-by":"publisher","DOI":"10.1016\/j.pepi.2014.05.005"},{"key":"PhysRevB.109.L020503Cc28R1","doi-asserted-by":"publisher","DOI":"10.1080\/08957959.2015.1059835"},{"key":"PhysRevB.109.L020503Cc29R1","doi-asserted-by":"publisher","DOI":"10.1107\/S0021889813003531"},{"key":"PhysRevB.109.L020503Cc30R1","doi-asserted-by":"publisher","DOI":"10.1107\/S1600577515002283"},{"key":"PhysRevB.109.L020503Cc31R1","doi-asserted-by":"publisher","DOI":"10.5523\/bris.22buhfhub62xs2c7xv5w0pa10d"}],"container-title":["Physical 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