{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,21]],"date-time":"2026-08-21T13:53:32Z","timestamp":1787320412956,"version":"build-2736575974"},"reference-count":29,"publisher":"American Physical Society (APS)","issue":"10","license":[{"start":{"date-parts":[[2024,3,29]],"date-time":"2024-03-29T00:00:00Z","timestamp":1711670400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001659","name":"Deutsche Forschungsgemeinschaft","doi-asserted-by":"publisher","award":["SFB 1143"],"award-info":[{"award-number":["SFB 1143"]}],"id":[{"id":"10.13039\/501100001659","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001659","name":"Deutsche Forschungsgemeinschaft","doi-asserted-by":"publisher","award":["247310070"],"award-info":[{"award-number":["247310070"]}],"id":[{"id":"10.13039\/501100001659","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["journals.aps.org"],"crossmark-restriction":true},"short-container-title":["Phys. Rev. B"],"accepted":{"date-parts":[[2024,3,6]]},"abstract":"<jats:p>\n                    Two-dimensional coherent spectroscopy (2DCS) probes the nonlinear optical response of correlated systems. An interesting application is the study of fractionalized excitations, which are challenging to distinguish unambiguously in linear response. Here we demonstrate how the sensitivity of optical matrix elements to variations in the photon polarization allows one to probe different aspects of low-lying excitations in models of the candidate fractionalized materials\n                    <a:math xmlns:a=\"http:\/\/www.w3.org\/1998\/Math\/MathML\">\n                      <a:mrow>\n                        <a:msub>\n                          <a:mi>Ce<\/a:mi>\n                          <a:mn>2<\/a:mn>\n                        <\/a:msub>\n                        <a:msub>\n                          <a:mi>Zr<\/a:mi>\n                          <a:mn>2<\/a:mn>\n                        <\/a:msub>\n                        <a:msub>\n                          <a:mi mathvariant=\"normal\">O<\/a:mi>\n                          <a:mn>7<\/a:mn>\n                        <\/a:msub>\n                      <\/a:mrow>\n                    <\/a:math>\n                    and\n                    <c:math xmlns:c=\"http:\/\/www.w3.org\/1998\/Math\/MathML\">\n                      <c:mrow>\n                        <c:msub>\n                          <c:mi>Nd<\/c:mi>\n                          <c:mn>2<\/c:mn>\n                        <\/c:msub>\n                        <c:msub>\n                          <c:mi>Zr<\/c:mi>\n                          <c:mn>2<\/c:mn>\n                        <\/c:msub>\n                        <c:msub>\n                          <c:mi mathvariant=\"normal\">O<\/c:mi>\n                          <c:mn>7<\/c:mn>\n                        <\/c:msub>\n                      <\/c:mrow>\n                    <\/c:math>\n                    , which host effective one-dimensional spin chains when subjected to a [110] magnetic field. We show how both fractionalized spinon excitations or conventional magnons can be picked out in the 2DCS response and how the response from polarized spin chains can be used to probe the dipolar-octupolar mixing angle\n                    <e:math xmlns:e=\"http:\/\/www.w3.org\/1998\/Math\/MathML\">\n                      <e:mi>\u03b8<\/e:mi>\n                    <\/e:math>\n                    through the relative intensity of one- and two-magnon signals. Further, we find that a [001] polarization of the probe field is particularly sensitive to lower band edge of the spinon continuum and can be used as a measure of the proximity of a quantum critical point in\n                    <f:math xmlns:f=\"http:\/\/www.w3.org\/1998\/Math\/MathML\">\n                      <f:mrow>\n                        <f:msub>\n                          <f:mi>Ce<\/f:mi>\n                          <f:mn>2<\/f:mn>\n                        <\/f:msub>\n                        <f:msub>\n                          <f:mi>Zr<\/f:mi>\n                          <f:mn>2<\/f:mn>\n                        <\/f:msub>\n                        <f:msub>\n                          <f:mi mathvariant=\"normal\">O<\/f:mi>\n                          <f:mn>7<\/f:mn>\n                        <\/f:msub>\n                      <\/f:mrow>\n                    <\/f:math>\n                    . 2DCS can thus be employed to provide invaluable and detailed information both on the constituent degrees of freedom of a quantum material and on their collective behavior.\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.109.104435","type":"journal-article","created":{"date-parts":[[2024,3,29]],"date-time":"2024-03-29T10:02:33Z","timestamp":1711706553000},"update-policy":"https:\/\/doi.org\/10.1103\/crossmark-policy","source":"Crossref","is-referenced-by-count":8,"title":["Exploiting polarization dependence in two-dimensional coherent spectroscopy: Examples of\n                    <mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\">\n                      <mml:mrow>\n                        <mml:msub>\n                          <mml:mi>Ce<\/mml:mi>\n                          <mml:mn>2<\/mml:mn>\n                        <\/mml:msub>\n                        <mml:msub>\n                          <mml:mi>Zr<\/mml:mi>\n                          <mml:mn>2<\/mml:mn>\n                        <\/mml:msub>\n                        <mml:msub>\n                          <mml:mi mathvariant=\"normal\">O<\/mml:mi>\n                          <mml:mn>7<\/mml:mn>\n                        <\/mml:msub>\n                      <\/mml:mrow>\n                    <\/mml:math>\n                    and\n                    <mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\">\n                      <mml:mrow>\n                        <mml:msub>\n                          <mml:mi>Nd<\/mml:mi>\n                          <mml:mn>2<\/mml:mn>\n                        <\/mml:msub>\n                        <mml:msub>\n                          <mml:mi>Zr<\/mml:mi>\n                          <mml:mn>2<\/mml:mn>\n                        <\/mml:msub>\n                        <mml:msub>\n                          <mml:mi mathvariant=\"normal\">O<\/mml:mi>\n                          <mml:mn>7<\/mml:mn>\n                        <\/mml:msub>\n                      <\/mml:mrow>\n                    <\/mml:math>"],"prefix":"10.1103","volume":"109","author":[{"ORCID":"https:\/\/orcid.org\/0009-0003-0302-5182","authenticated-orcid":true,"given":"Mark","family":"Potts","sequence":"first","affiliation":[{"name":"Max Planck Institute for the Physics of Complex Systems, N\u00f6thnitzer Strasse 38, Dresden 01187, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Roderich","family":"Moessner","sequence":"additional","affiliation":[{"name":"Max Planck Institute for the Physics of Complex Systems, N\u00f6thnitzer Strasse 38, Dresden 01187, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9345-632X","authenticated-orcid":true,"given":"Owen","family":"Benton","sequence":"additional","affiliation":[{"name":"Max Planck Institute for the Physics of Complex Systems, N\u00f6thnitzer Strasse 38, Dresden 01187, Germany"},{"name":"School of Physical and Chemical Sciences, Queen Mary University of London, London E1 4NS, United Kingdom"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"16","published-online":{"date-parts":[[2024,3,29]]},"reference":[{"key":"PhysRevB.109.104435Cc1R1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevB.52.13368"},{"key":"PhysRevB.109.104435Cc2R1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevLett.98.107204"},{"key":"PhysRevB.109.104435Cc3R1","doi-asserted-by":"publisher","DOI":"10.1038\/nature08917"},{"key":"PhysRevB.109.104435Cc4R1","doi-asserted-by":"publisher","DOI":"10.1038\/nature11659"},{"key":"PhysRevB.109.104435Cc5R1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevLett.122.257401"},{"key":"PhysRevB.109.104435Cc6R1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevLett.125.237601"},{"key":"PhysRevB.109.104435Cc7R1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevX.11.031035"},{"key":"PhysRevB.109.104435Cc8R1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevLett.124.117205"},{"key":"PhysRevB.109.104435Cc9R1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevB.107.205143"},{"key":"PhysRevB.109.104435Cc10R1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevResearch.3.013254"},{"key":"PhysRevB.109.104435Cc11R1","doi-asserted-by":"publisher","DOI":"10.1146\/annurev-conmatphys-022317-110520"},{"key":"PhysRevB.109.104435Cc12R1","doi-asserted-by":"publisher","DOI":"10.1038\/s41567-020-0827-7"},{"key":"PhysRevB.109.104435Cc14R1","doi-asserted-by":"publisher","DOI":"10.1038\/s41567-019-0577-6"},{"key":"PhysRevB.109.104435Cc15R1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevMaterials.6.044406"},{"key":"PhysRevB.109.104435Cc16R1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevX.12.021015"},{"key":"PhysRevB.109.104435Cc17R1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevB.106.094425"},{"key":"PhysRevB.109.104435Cc18R1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevX.14.011005"},{"key":"PhysRevB.109.104435Cc19R1","doi-asserted-by":"publisher","DOI":"10.1038\/s41535-022-00458-2"},{"key":"PhysRevB.109.104435Cc21R1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevB.108.054438"},{"key":"PhysRevB.109.104435Cc22R1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevB.98.060408"},{"key":"PhysRevB.109.104435Cc23R1","doi-asserted-by":"publisher","DOI":"10.1007\/s003390201638"},{"key":"PhysRevB.109.104435Cc24R1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevB.72.224411"},{"key":"PhysRevB.109.104435Cc25R1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevB.79.014408"},{"key":"PhysRevB.109.104435Cc26R1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevB.99.144420"},{"key":"PhysRevB.109.104435Cc27R1","doi-asserted-by":"publisher","DOI":"10.1038\/s41467-018-06212-2"},{"key":"PhysRevB.109.104435Cc28R1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevLett.126.247201"},{"key":"PhysRevB.109.104435Cc29R1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevLett.112.167203"},{"key":"PhysRevB.109.104435Cc30R1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevB.102.245102"},{"key":"PhysRevB.109.104435Cc31R1","doi-asserted-by":"publisher","DOI":"10.1016\/0003-4916(61)90115-4"}],"container-title":["Physical 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