{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,16]],"date-time":"2026-10-16T09:49:25Z","timestamp":1792144165552,"version":"4.4.0"},"reference-count":39,"publisher":"IOP Publishing","issue":"39","license":[{"start":{"date-parts":[[2026,9,28]],"date-time":"2026-09-28T00:00:00Z","timestamp":1790553600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/publishingsupport.iopscience.iop.org\/iop-standard\/v1"},{"start":{"date-parts":[[2026,9,28]],"date-time":"2026-09-28T00:00:00Z","timestamp":1790553600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/iopscience.iop.org\/info\/page\/text-and-data-mining"},{"start":{"date-parts":[[2026,9,28]],"date-time":"2026-09-28T00:00:00Z","timestamp":1790553600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/publishingsupport.iopscience.iop.org\/questions\/alternative-author-rights-policies\/"},{"start":{"date-parts":[[2026,9,28]],"date-time":"2026-09-28T00:00:00Z","timestamp":1790553600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/publishingsupport.iopscience.iop.org\/questions\/alternative-author-rights-policies\/"}],"funder":[{"name":"National Quantum Mission"},{"name":"Engineering Research Board (SERB) of Govt. of India","award":["SPR\/2021\/000762"],"award-info":[{"award-number":["SPR\/2021\/000762"]}]},{"name":"Department of Science and Technology-INSPIRE Fellowship","award":["IF22051"],"award-info":[{"award-number":["IF22051"]}]}],"content-domain":{"domain":["iopscience.iop.org"],"crossmark-restriction":false},"short-container-title":["J. 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Matter"],"published-print":{"date-parts":[[2026,10,2]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>\n                    We report the observation of a weak broad mode with characteristic dependence on thickness of flakes suggesting this as a layer breathing (LB) mode in\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:mrow>\n                          <mml:msub>\n                            <mml:mrow>\n                              <mml:mi>Cr<\/mml:mi>\n                            <\/mml:mrow>\n                            <mml:mn>2<\/mml:mn>\n                          <\/mml:msub>\n                          <mml:msub>\n                            <mml:mrow>\n                              <mml:mi>Ge<\/mml:mi>\n                            <\/mml:mrow>\n                            <mml:mn>2<\/mml:mn>\n                          <\/mml:msub>\n                          <mml:msub>\n                            <mml:mrow>\n                              <mml:mi>Te<\/mml:mi>\n                            <\/mml:mrow>\n                            <mml:mn>6<\/mml:mn>\n                          <\/mml:msub>\n                        <\/mml:mrow>\n                      <\/mml:math>\n                    <\/jats:inline-formula>\n                    (CGT) measured using Raman spectroscopy. Symmetry analysis confirms that the CGT falls under the non-polar category of layered material. The evolution of the LB mode frequency with increasing layer number (\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:mrow>\n                          <mml:mi>N<\/mml:mi>\n                        <\/mml:mrow>\n                      <\/mml:math>\n                    <\/jats:inline-formula>\n                    ) reveals a distinct softening trend, characteristic of weakening restoring forces in thicker flakes. By fitting the experimental Raman data using the linear chain model (LCM), we quantitatively extract the interlayer force constant (\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:mrow>\n                          <mml:mrow>\n                            <mml:msub>\n                              <mml:mi>K<\/mml:mi>\n                              <mml:mrow>\n                                <mml:mi mathvariant=\"normal\">c<\/mml:mi>\n                              <\/mml:mrow>\n                            <\/mml:msub>\n                          <\/mml:mrow>\n                        <\/mml:mrow>\n                      <\/mml:math>\n                    <\/jats:inline-formula>\n                    ), providing a measure of the vdW coupling strength between layers. The good agreement between experimental and theoretical results establishes the LCM as a reliable framework for describing interlayer phonon dynamics in CGT. In conclusion, these findings not only deepen our understanding of interlayer interactions and symmetry-driven phonon behavior but also offer a powerful diagnostic for assuming layer thickness and structural integrity in vdW magnets. Such insights are pivotal for 2D spintronics and multifunctional device architectures based on CGT.\n                  <\/jats:p>","DOI":"10.1088\/1361-648x\/aea95a","type":"journal-article","created":{"date-parts":[[2026,9,17]],"date-time":"2026-09-17T22:53:32Z","timestamp":1789685612000},"page":"395701","update-policy":"https:\/\/doi.org\/10.1088\/crossmark-policy","source":"Crossref","is-referenced-by-count":0,"title":["Layer breathing Raman mode in two-dimensional van der Waals magnet Cr\n                    <sub>2<\/sub>\n                    Ge\n                    <sub>2<\/sub>\n                    Te\n                    <sub>6<\/sub>"],"prefix":"10.1088","volume":"38","author":[{"ORCID":"https:\/\/orcid.org\/0009-0005-1785-1228","authenticated-orcid":true,"given":"Nilesh","family":"Choudhury","sequence":"first","affiliation":[{"name":"Indian Institution of Technology Delhi"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0002-1879-6484","authenticated-orcid":false,"given":"Sandeep","family":"Soni","sequence":"additional","affiliation":[{"name":"Indian Institution of Technology Delhi"}],"role":[{"vocabulary":"crossref","role":"author"},{"role":"investigation","vocabulary":"credit"},{"role":"methodology","vocabulary":"credit"}]},{"ORCID":"https:\/\/orcid.org\/0009-0005-2049-1163","authenticated-orcid":false,"given":"Neesha","family":"Yadav","sequence":"additional","affiliation":[{"name":"Indian Institution of Technology Delhi"}],"role":[{"vocabulary":"crossref","role":"author"},{"role":"writing-original-draft","vocabulary":"credit"}]},{"given":"Mayank","family":"Shukla","sequence":"additional","affiliation":[{"name":"Indian Institution of Technology Delhi"}],"role":[{"vocabulary":"crossref","role":"author"},{"role":"data-curation","vocabulary":"credit"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3799-6919","authenticated-orcid":true,"given":"Pintu","family":"Das","sequence":"additional","affiliation":[{"name":"Indian Institution of Technology Delhi"}],"role":[{"vocabulary":"crossref","role":"author"},{"role":"conceptualization","vocabulary":"credit"},{"role":"funding-acquisition","vocabulary":"credit"},{"role":"project-administration","vocabulary":"credit"},{"role":"supervision","vocabulary":"credit"},{"role":"validation","vocabulary":"credit"},{"role":"visualization","vocabulary":"credit"},{"role":"writing-original-draft","vocabulary":"credit"},{"role":"writing-review-editing","vocabulary":"credit"}]}],"member":"266","published-online":{"date-parts":[[2026,9,28]]},"reference":[{"key":"cmaea95abib1","doi-asserted-by":"publisher","first-page":"6359","DOI":"10.1021\/acs.nanolett.1c00729","type":"journal-article","article-title":"A roadmap for disruptive applications and heterogeneous integration using two-dimensional materials: state-of-the-art and technological challenges","volume":"21","author":"Shrivastava","year":"2021","journal-title":"Nano Lett."},{"key":"cmaea95abib2","doi-asserted-by":"publisher","first-page":"3860","DOI":"10.1038\/s41467-020-17566-x","type":"journal-article","article-title":"N\u00e9el-type skyrmion in WTe2\/Fe3GeTe2 van der Waals heterostructure","volume":"11","author":"Wu","year":"2020","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":"2026-07-03","name":"date_received","label":"Date Received","group":{"name":"publication_dates","label":"Publication dates"}},{"value":"2026-09-17","name":"date_accepted","label":"Date Accepted","group":{"name":"publication_dates","label":"Publication dates"}},{"value":"2026-09-28","name":"date_epub","label":"Online publication date","group":{"name":"publication_dates","label":"Publication dates"}}]}}