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In the context of technological applications, it is very important to understand possible intervalley coupling mechanisms. Here, we show how the Dexter-like intervalley coupling mixes A and B states from opposite valleys leading to a significant broadening\n                    <jats:inline-formula>\n                      <jats:tex-math>\n                        \n                      <\/jats:tex-math>\n                      <mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" overflow=\"scroll\">\n                        <mml:mstyle displaystyle=\"false\">\n                          <mml:msub>\n                            <mml:mi>\u03b3<\/mml:mi>\n                            <mml:mrow>\n                              <mml:msub>\n                                <mml:mrow>\n                                  <mml:mi mathvariant=\"normal\">B<\/mml:mi>\n                                <\/mml:mrow>\n                                <mml:mrow>\n                                  <mml:mrow>\n                                    <mml:mn>1<\/mml:mn>\n                                    <mml:mi mathvariant=\"normal\">s<\/mml:mi>\n                                  <\/mml:mrow>\n                                <\/mml:mrow>\n                              <\/mml:msub>\n                            <\/mml:mrow>\n                          <\/mml:msub>\n                        <\/mml:mstyle>\n                      <\/mml:math>\n                    <\/jats:inline-formula>\n                    of the B\n                    <jats:sub>1s<\/jats:sub>\n                    exciton. The effect is much more pronounced in tungsten-based TMDs, where the coupling excitonic states are quasi-resonant. We calculate a ratio\n                    <jats:inline-formula>\n                      <jats:tex-math>\n                        \n                      <\/jats:tex-math>\n                      <mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" overflow=\"scroll\">\n                        <mml:mstyle displaystyle=\"false\">\n                          <mml:msub>\n                            <mml:mi>\u03b3<\/mml:mi>\n                            <mml:mrow>\n                              <mml:msub>\n                                <mml:mrow>\n                                  <mml:mi mathvariant=\"normal\">B<\/mml:mi>\n                                <\/mml:mrow>\n                                <mml:mrow>\n                                  <mml:mrow>\n                                    <mml:mn>1<\/mml:mn>\n                                    <mml:mi mathvariant=\"normal\">s<\/mml:mi>\n                                  <\/mml:mrow>\n                                <\/mml:mrow>\n                              <\/mml:msub>\n                            <\/mml:mrow>\n                          <\/mml:msub>\n                          <mml:mrow>\n                            <mml:mo>\/<\/mml:mo>\n                          <\/mml:mrow>\n                          <mml:msub>\n                            <mml:mi>\u03b3<\/mml:mi>\n                            <mml:mrow>\n                              <mml:msub>\n                                <mml:mrow>\n                                  <mml:mi mathvariant=\"normal\">A<\/mml:mi>\n                                <\/mml:mrow>\n                                <mml:mrow>\n                                  <mml:mrow>\n                                    <mml:mn>1<\/mml:mn>\n                                    <mml:mi mathvariant=\"normal\">s<\/mml:mi>\n                                  <\/mml:mrow>\n                                <\/mml:mrow>\n                              <\/mml:msub>\n                            <\/mml:mrow>\n                          <\/mml:msub>\n                          <mml:mo>\u2248<\/mml:mo>\n                          <mml:mn>4.0<\/mml:mn>\n                        <\/mml:mstyle>\n                      <\/mml:math>\n                    <\/jats:inline-formula>\n                    , which is in good agreement with the experimentally measured value of\n                    <jats:inline-formula>\n                      <jats:tex-math>\n                        \n                      <\/jats:tex-math>\n                      <mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" overflow=\"scroll\">\n                        <mml:mstyle displaystyle=\"false\">\n                          <mml:mn>3.9<\/mml:mn>\n                          <mml:mo>\u00b1<\/mml:mo>\n                          <mml:mn>0.7<\/mml:mn>\n                        <\/mml:mstyle>\n                      <\/mml:math>\n                    <\/jats:inline-formula>\n                    . In addition to the broadening effect, the Dexter-like intervalley coupling also leads to a considerable energy renormalization resulting in an increased energetic distance between A\n                    <jats:sub>1s<\/jats:sub>\n                    and B\n                    <jats:sub>1s<\/jats:sub>\n                    states.\n                  <\/jats:p>","DOI":"10.1088\/2053-1583\/aaaa8b","type":"journal-article","created":{"date-parts":[[2018,1,25]],"date-time":"2018-01-25T09:45:37Z","timestamp":1516873537000},"page":"025011","update-policy":"https:\/\/doi.org\/10.1088\/crossmark-policy","source":"Crossref","is-referenced-by-count":20,"title":["Exciton broadening and band renormalization due to Dexter-like intervalley coupling"],"prefix":"10.1088","volume":"5","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-8355-3940","authenticated-orcid":false,"given":"Ivan","family":"Bernal-Villamil","sequence":"first","affiliation":[{"name":"Chalmers University of Technology"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Gunnar","family":"Bergh\u00e4user","sequence":"additional","affiliation":[{"name":"Chalmers University of Technology"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Malte","family":"Selig","sequence":"additional","affiliation":[{"name":"Technische Universit\u00e4t Berlin"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Iris","family":"Niehues","sequence":"additional","affiliation":[{"name":"University of M\u00fcnster"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Robert","family":"Schmidt","sequence":"additional","affiliation":[{"name":"University of M\u00fcnster"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Robert","family":"Schneider","sequence":"additional","affiliation":[{"name":"University of M\u00fcnster"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Philipp","family":"Tonndorf","sequence":"additional","affiliation":[{"name":"University of M\u00fcnster"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Paul","family":"Erhart","sequence":"additional","affiliation":[{"name":"Chalmers University of Technology"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3584-0635","authenticated-orcid":false,"given":"Steffen Michaelis","family":"de Vasconcellos","sequence":"additional","affiliation":[{"name":"University of M\u00fcnster"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rudolf","family":"Bratschitsch","sequence":"additional","affiliation":[{"name":"University of M\u00fcnster"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Andreas","family":"Knorr","sequence":"additional","affiliation":[{"name":"Technische Universit\u00e4t Berlin"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1434-9003","authenticated-orcid":false,"given":"Ermin","family":"Malic","sequence":"additional","affiliation":[{"name":"Chalmers University of Technology"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"266","published-online":{"date-parts":[[2018,2,12]]},"reference":[{"key":"tdmaaaa8bbib001","doi-asserted-by":"publisher","first-page":"887","DOI":"10.1038\/ncomms1882","type":"journal-article","volume":"3","author":"Cao","year":"2012","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":"2017-12-01","name":"date_received","label":"Date Received","group":{"name":"publication_dates","label":"Publication dates"}},{"value":"2018-01-25","name":"date_accepted","label":"Date Accepted","group":{"name":"publication_dates","label":"Publication dates"}},{"value":"2018-02-12","name":"date_epub","label":"Online publication date","group":{"name":"publication_dates","label":"Publication dates"}}]}}