Observation of a massive phason in a charge-density-wave insulator
The lowest-lying fundamental excitation of an incommensurate charge-density-wave material is believed to be a massless phason—a collective modulation of the phase of the charge-density-wave order parameter. However, long-range Coulomb interactions should push the phason energy up to the plasma energ...
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| Veröffentlicht in: | Nature materials 2023-04, Vol.22 (4), p.429-433 |
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| creator | Kim, Soyeun Lv, Yinchuan Sun, Xiao-Qi Zhao, Chengxi Bielinski, Nina Murzabekova, Azel Qu, Kejian Duncan, Ryan A. Nguyen, Quynh L. D. Trigo, Mariano Shoemaker, Daniel P. Bradlyn, Barry Mahmood, Fahad |
| description | The lowest-lying fundamental excitation of an incommensurate charge-density-wave material is believed to be a massless phason—a collective modulation of the phase of the charge-density-wave order parameter. However, long-range Coulomb interactions should push the phason energy up to the plasma energy of the charge-density-wave condensate, resulting in a massive phason and fully gapped spectrum
1
. Using time-domain terahertz emission spectroscopy, we investigate this issue in (TaSe
4
)
2
I, a quasi-one-dimensional charge-density-wave insulator. On transient photoexcitation at low temperatures, we find the material strikingly emits coherent, narrowband terahertz radiation. The frequency, polarization and temperature dependences of the emitted radiation imply the existence of a phason that acquires mass by coupling to long-range Coulomb interactions. Our observations underscore the role of long-range interactions in determining the nature of collective excitations in materials with modulated charge or spin order.
We report the observation of narrowband terahertz emission from a quasi-one-dimensional charge-density-wave insulator, (TaSe
4
)
2
I. The origin of the emitted radiation is interpreted as a phason that obtains mass due to the long-range Coulomb interaction. |
| doi_str_mv | 10.1038/s41563-023-01504-5 |
| format | Article |
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1
. Using time-domain terahertz emission spectroscopy, we investigate this issue in (TaSe
4
)
2
I, a quasi-one-dimensional charge-density-wave insulator. On transient photoexcitation at low temperatures, we find the material strikingly emits coherent, narrowband terahertz radiation. The frequency, polarization and temperature dependences of the emitted radiation imply the existence of a phason that acquires mass by coupling to long-range Coulomb interactions. Our observations underscore the role of long-range interactions in determining the nature of collective excitations in materials with modulated charge or spin order.
We report the observation of narrowband terahertz emission from a quasi-one-dimensional charge-density-wave insulator, (TaSe
4
)
2
I. The origin of the emitted radiation is interpreted as a phason that obtains mass due to the long-range Coulomb interaction.</description><identifier>ISSN: 1476-1122</identifier><identifier>EISSN: 1476-4660</identifier><identifier>DOI: 10.1038/s41563-023-01504-5</identifier><identifier>PMID: 36894771</identifier><language>eng</language><publisher>London: Nature Publishing Group UK</publisher><subject>639/301/1019 ; 639/766/119 ; 639/766/119/995 ; 639/766/400/561 ; 639/766/930/527 ; Biomaterials ; Charge density waves ; Charge materials ; Chemistry and Materials Science ; Condensed Matter Physics ; Emission analysis ; Emission spectroscopy ; Letter ; Low temperature ; MATERIALS SCIENCE ; Nanotechnology ; Narrowband ; Optical and Electronic Materials ; Order parameters ; Photoexcitation ; Radiation ; Terahertz frequencies</subject><ispartof>Nature materials, 2023-04, Vol.22 (4), p.429-433</ispartof><rights>The Author(s), under exclusive licence to Springer Nature Limited 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.</rights><rights>2023. The Author(s), under exclusive licence to Springer Nature Limited.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c446t-6cde3bbf43a6b14d99ed3eb8c1df7ade32c7c4b08a5f1a54e3761c5a106ba2143</citedby><cites>FETCH-LOGICAL-c446t-6cde3bbf43a6b14d99ed3eb8c1df7ade32c7c4b08a5f1a54e3761c5a106ba2143</cites><orcidid>0000-0003-3650-7551 ; 0000-0002-9641-3453 ; 0000-0003-4655-188X ; 0000-0001-6327-1076 ; 000000034655188X ; 0000000163271076 ; 0000000336507551 ; 0000000296413453</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1038/s41563-023-01504-5$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1038/s41563-023-01504-5$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>230,314,776,780,881,27901,27902,41464,42533,51294</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/36894771$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink><backlink>$$Uhttps://www.osti.gov/servlets/purl/2004427$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Kim, Soyeun</creatorcontrib><creatorcontrib>Lv, Yinchuan</creatorcontrib><creatorcontrib>Sun, Xiao-Qi</creatorcontrib><creatorcontrib>Zhao, Chengxi</creatorcontrib><creatorcontrib>Bielinski, Nina</creatorcontrib><creatorcontrib>Murzabekova, Azel</creatorcontrib><creatorcontrib>Qu, Kejian</creatorcontrib><creatorcontrib>Duncan, Ryan A.</creatorcontrib><creatorcontrib>Nguyen, Quynh L. D.</creatorcontrib><creatorcontrib>Trigo, Mariano</creatorcontrib><creatorcontrib>Shoemaker, Daniel P.</creatorcontrib><creatorcontrib>Bradlyn, Barry</creatorcontrib><creatorcontrib>Mahmood, Fahad</creatorcontrib><creatorcontrib>SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)</creatorcontrib><title>Observation of a massive phason in a charge-density-wave insulator</title><title>Nature materials</title><addtitle>Nat. Mater</addtitle><addtitle>Nat Mater</addtitle><description>The lowest-lying fundamental excitation of an incommensurate charge-density-wave material is believed to be a massless phason—a collective modulation of the phase of the charge-density-wave order parameter. However, long-range Coulomb interactions should push the phason energy up to the plasma energy of the charge-density-wave condensate, resulting in a massive phason and fully gapped spectrum
1
. Using time-domain terahertz emission spectroscopy, we investigate this issue in (TaSe
4
)
2
I, a quasi-one-dimensional charge-density-wave insulator. On transient photoexcitation at low temperatures, we find the material strikingly emits coherent, narrowband terahertz radiation. The frequency, polarization and temperature dependences of the emitted radiation imply the existence of a phason that acquires mass by coupling to long-range Coulomb interactions. Our observations underscore the role of long-range interactions in determining the nature of collective excitations in materials with modulated charge or spin order.
We report the observation of narrowband terahertz emission from a quasi-one-dimensional charge-density-wave insulator, (TaSe
4
)
2
I. The origin of the emitted radiation is interpreted as a phason that obtains mass due to the long-range Coulomb interaction.</description><subject>639/301/1019</subject><subject>639/766/119</subject><subject>639/766/119/995</subject><subject>639/766/400/561</subject><subject>639/766/930/527</subject><subject>Biomaterials</subject><subject>Charge density waves</subject><subject>Charge materials</subject><subject>Chemistry and Materials Science</subject><subject>Condensed Matter Physics</subject><subject>Emission analysis</subject><subject>Emission spectroscopy</subject><subject>Letter</subject><subject>Low temperature</subject><subject>MATERIALS SCIENCE</subject><subject>Nanotechnology</subject><subject>Narrowband</subject><subject>Optical and Electronic Materials</subject><subject>Order parameters</subject><subject>Photoexcitation</subject><subject>Radiation</subject><subject>Terahertz frequencies</subject><issn>1476-1122</issn><issn>1476-4660</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2023</creationdate><recordtype>article</recordtype><sourceid>BENPR</sourceid><recordid>eNp9kU9P3DAQxa0KVCjtF-gBreiFS8Djf0mOBZWChMSFni3HmbBGu_biSbbi22PItpV64GDZmvebNxo_xr4CPwMum3NSoI2suCgHNFeV_sAOQdWmUsbwvd0bQIgD9onokXMBWpuP7ECaplV1DYfs4q4jzFs3hhQXaVi4xdoRhS0uNktHpRZiqfmlyw9Y9RgpjM_Vb1f0EGlauTHlz2x_cCvCL7v7iP26-nF_eV3d3v28ufx-W3mlzFgZ36PsukFJZzpQfdtiL7FrPPRD7YomfO1VxxunB3BaoawNeO2Am84JUPKIncy-icZgyYcR_dKnGNGPVnCulKgLdDpDm5yeJqTRrgN5XK1cxDSRFXVjgJfdX9Fv_6GPacqxrFCoVooGWtEWSsyUz4ko42A3OaxdfrbA7WsMdo7BlhjsWwxWl6bjnfXUrbH_2_Ln3wsgZ4CKFB8w_5v9ju0L7bGRvA</recordid><startdate>20230401</startdate><enddate>20230401</enddate><creator>Kim, Soyeun</creator><creator>Lv, Yinchuan</creator><creator>Sun, Xiao-Qi</creator><creator>Zhao, Chengxi</creator><creator>Bielinski, Nina</creator><creator>Murzabekova, Azel</creator><creator>Qu, Kejian</creator><creator>Duncan, Ryan A.</creator><creator>Nguyen, Quynh L. 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D.</creatorcontrib><creatorcontrib>Trigo, Mariano</creatorcontrib><creatorcontrib>Shoemaker, Daniel P.</creatorcontrib><creatorcontrib>Bradlyn, Barry</creatorcontrib><creatorcontrib>Mahmood, Fahad</creatorcontrib><creatorcontrib>SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)</creatorcontrib><collection>PubMed</collection><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>Engineered Materials Abstracts</collection><collection>Health & Medical Collection</collection><collection>ProQuest Central (purchase pre-March 2016)</collection><collection>Medical Database (Alumni Edition)</collection><collection>Science Database (Alumni Edition)</collection><collection>ProQuest Pharma Collection</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>Hospital Premium Collection</collection><collection>Hospital Premium Collection (Alumni Edition)</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>Materials Science & Engineering Collection</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest One Sustainability</collection><collection>ProQuest Central UK/Ireland</collection><collection>ProQuest Central Essentials</collection><collection>ProQuest Central</collection><collection>Technology Collection</collection><collection>ProQuest One Community College</collection><collection>ProQuest Materials Science Collection</collection><collection>ProQuest Central Korea</collection><collection>Health Research Premium Collection</collection><collection>Health Research Premium Collection (Alumni)</collection><collection>ProQuest Central Student</collection><collection>SciTech Premium Collection</collection><collection>Materials Research Database</collection><collection>ProQuest Health & Medical Complete (Alumni)</collection><collection>Materials Science Database</collection><collection>ProQuest Engineering Collection</collection><collection>Health & Medical Collection (Alumni Edition)</collection><collection>Medical Database</collection><collection>Science Database</collection><collection>Engineering Database</collection><collection>Materials Science Collection</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>Engineering Collection</collection><collection>ProQuest Central Basic</collection><collection>MEDLINE - Academic</collection><collection>OSTI.GOV - Hybrid</collection><collection>OSTI.GOV</collection><jtitle>Nature materials</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Kim, Soyeun</au><au>Lv, Yinchuan</au><au>Sun, Xiao-Qi</au><au>Zhao, Chengxi</au><au>Bielinski, Nina</au><au>Murzabekova, Azel</au><au>Qu, Kejian</au><au>Duncan, Ryan A.</au><au>Nguyen, Quynh L. D.</au><au>Trigo, Mariano</au><au>Shoemaker, Daniel P.</au><au>Bradlyn, Barry</au><au>Mahmood, Fahad</au><aucorp>SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Observation of a massive phason in a charge-density-wave insulator</atitle><jtitle>Nature materials</jtitle><stitle>Nat. Mater</stitle><addtitle>Nat Mater</addtitle><date>2023-04-01</date><risdate>2023</risdate><volume>22</volume><issue>4</issue><spage>429</spage><epage>433</epage><pages>429-433</pages><issn>1476-1122</issn><eissn>1476-4660</eissn><abstract>The lowest-lying fundamental excitation of an incommensurate charge-density-wave material is believed to be a massless phason—a collective modulation of the phase of the charge-density-wave order parameter. However, long-range Coulomb interactions should push the phason energy up to the plasma energy of the charge-density-wave condensate, resulting in a massive phason and fully gapped spectrum
1
. Using time-domain terahertz emission spectroscopy, we investigate this issue in (TaSe
4
)
2
I, a quasi-one-dimensional charge-density-wave insulator. On transient photoexcitation at low temperatures, we find the material strikingly emits coherent, narrowband terahertz radiation. The frequency, polarization and temperature dependences of the emitted radiation imply the existence of a phason that acquires mass by coupling to long-range Coulomb interactions. Our observations underscore the role of long-range interactions in determining the nature of collective excitations in materials with modulated charge or spin order.
We report the observation of narrowband terahertz emission from a quasi-one-dimensional charge-density-wave insulator, (TaSe
4
)
2
I. The origin of the emitted radiation is interpreted as a phason that obtains mass due to the long-range Coulomb interaction.</abstract><cop>London</cop><pub>Nature Publishing Group UK</pub><pmid>36894771</pmid><doi>10.1038/s41563-023-01504-5</doi><tpages>5</tpages><orcidid>https://orcid.org/0000-0003-3650-7551</orcidid><orcidid>https://orcid.org/0000-0002-9641-3453</orcidid><orcidid>https://orcid.org/0000-0003-4655-188X</orcidid><orcidid>https://orcid.org/0000-0001-6327-1076</orcidid><orcidid>https://orcid.org/000000034655188X</orcidid><orcidid>https://orcid.org/0000000163271076</orcidid><orcidid>https://orcid.org/0000000336507551</orcidid><orcidid>https://orcid.org/0000000296413453</orcidid><oa>free_for_read</oa></addata></record> |
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| ispartof | Nature materials, 2023-04, Vol.22 (4), p.429-433 |
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| subjects | 639/301/1019 639/766/119 639/766/119/995 639/766/400/561 639/766/930/527 Biomaterials Charge density waves Charge materials Chemistry and Materials Science Condensed Matter Physics Emission analysis Emission spectroscopy Letter Low temperature MATERIALS SCIENCE Nanotechnology Narrowband Optical and Electronic Materials Order parameters Photoexcitation Radiation Terahertz frequencies |
| title | Observation of a massive phason in a charge-density-wave insulator |
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