Superconductivity and lattice instability in face-centered cubic lanthanum under high pressure
The lattice dynamics and superconductivity of face-centered cubic (fcc) La under pressure are extensively studied using the linear-response methods within the framework of density-functional theory. A pressure-induced softening transverse acoustic (TA) phonon mode at the L point of the Brillouin zon...
Gespeichert in:
| Veröffentlicht in: | Journal of physics. Condensed matter 2007-10, Vol.19 (42), p.425234-425234 (9) |
|---|---|
| Hauptverfasser: | , , , , , , , , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| container_end_page | 425234 (9) |
|---|---|
| container_issue | 42 |
| container_start_page | 425234 |
| container_title | Journal of physics. Condensed matter |
| container_volume | 19 |
| creator | Gao, G Y Niu, Y L Cui, T Zhang, L J Li, Y Xie, Y He, Z Ma, Y M Zou, G T |
| description | The lattice dynamics and superconductivity of face-centered cubic (fcc) La under pressure are extensively studied using the linear-response methods within the framework of density-functional theory. A pressure-induced softening transverse acoustic (TA) phonon mode at the L point of the Brillouin zone is identified and the phonon softening pressure was predicted to be ~4.92 GPa, which coincides with the experimentally observed second-order phase transition pressure of ~5.3 GPa from fcc to distorted fcc. Moreover, no elastic instability is found under compression. Analysis of the calculated results suggests that the TA phonon instability is the driving force for this second-order phase transition. Furthermore, the current electron-phonon coupling (EPC) calculations suggest that the experimental observation of elevated superconducting transition temperature Tc with pressure is from the increased EPC strength and the softening TA phonon. |
| doi_str_mv | 10.1088/0953-8984/19/42/425234 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_pasca</sourceid><recordid>TN_cdi_pascalfrancis_primary_19225825</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>30983478</sourcerecordid><originalsourceid>FETCH-LOGICAL-c396t-124ccf620efcba7815b596999f96a7da61c36f22f65a869075d02041598fcbd93</originalsourceid><addsrcrecordid>eNqFkE1LAzEQhoMoWKt_Qfait7VJNskmRyl-QcGDCp4MaTaxkW12TbJC_70pW-pBQRgYmHne-XgBOEfwCkHOZ1DQquSCkxkSM4JzUFyRAzBBFUMlI_z1EEz20DE4ifEDQkh4RSbg7WnoTdCdbwad3JdLm0L5pmhVSk6bwvmY1NK127rzhVXalNr4ZIJpCj0snc6oTyvlh3Ux-MaEYuXeV0UfTIxDMKfgyKo2mrNdnoKX25vn-X25eLx7mF8vSl0JlkqEidaWYWisXqqaI7qkggkhrGCqbhRDumIWY8uo4kzAmjYQQ4Ko4FnQiGoKLse5feg-BxOTXLuoTZuPM90QZQVFfrfmGWQjqEMXYzBW9sGtVdhIBOXWTrl1Sm6dkkhIguVoZxZe7DaoqFVrg_LaxR-1wJhyTDNXjpzr-n3375myb2zm0W_-n1u-AUKnkxs</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>30983478</pqid></control><display><type>article</type><title>Superconductivity and lattice instability in face-centered cubic lanthanum under high pressure</title><source>IOP Publishing Journals</source><source>Institute of Physics (IOP) Journals - HEAL-Link</source><creator>Gao, G Y ; Niu, Y L ; Cui, T ; Zhang, L J ; Li, Y ; Xie, Y ; He, Z ; Ma, Y M ; Zou, G T</creator><creatorcontrib>Gao, G Y ; Niu, Y L ; Cui, T ; Zhang, L J ; Li, Y ; Xie, Y ; He, Z ; Ma, Y M ; Zou, G T</creatorcontrib><description>The lattice dynamics and superconductivity of face-centered cubic (fcc) La under pressure are extensively studied using the linear-response methods within the framework of density-functional theory. A pressure-induced softening transverse acoustic (TA) phonon mode at the L point of the Brillouin zone is identified and the phonon softening pressure was predicted to be ~4.92 GPa, which coincides with the experimentally observed second-order phase transition pressure of ~5.3 GPa from fcc to distorted fcc. Moreover, no elastic instability is found under compression. Analysis of the calculated results suggests that the TA phonon instability is the driving force for this second-order phase transition. Furthermore, the current electron-phonon coupling (EPC) calculations suggest that the experimental observation of elevated superconducting transition temperature Tc with pressure is from the increased EPC strength and the softening TA phonon.</description><identifier>ISSN: 0953-8984</identifier><identifier>EISSN: 1361-648X</identifier><identifier>DOI: 10.1088/0953-8984/19/42/425234</identifier><identifier>CODEN: JCOMEL</identifier><language>eng</language><publisher>Bristol: IOP Publishing</publisher><subject>Condensed matter: electronic structure, electrical, magnetic, and optical properties ; Exact sciences and technology ; Metals, alloys and compounds (a15, 001c15, laves phases, chevrel phases, borocarbides, etc.) ; Phonons ; Physics ; Properties of type I and type II superconductors ; Superconducting materials (excluding high-tc compounds) ; Superconductivity</subject><ispartof>Journal of physics. Condensed matter, 2007-10, Vol.19 (42), p.425234-425234 (9)</ispartof><rights>2008 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c396t-124ccf620efcba7815b596999f96a7da61c36f22f65a869075d02041598fcbd93</citedby><cites>FETCH-LOGICAL-c396t-124ccf620efcba7815b596999f96a7da61c36f22f65a869075d02041598fcbd93</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://iopscience.iop.org/article/10.1088/0953-8984/19/42/425234/pdf$$EPDF$$P50$$Giop$$H</linktopdf><link.rule.ids>309,310,314,776,780,785,786,23909,23910,25118,27901,27902,53805,53885</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=19225825$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Gao, G Y</creatorcontrib><creatorcontrib>Niu, Y L</creatorcontrib><creatorcontrib>Cui, T</creatorcontrib><creatorcontrib>Zhang, L J</creatorcontrib><creatorcontrib>Li, Y</creatorcontrib><creatorcontrib>Xie, Y</creatorcontrib><creatorcontrib>He, Z</creatorcontrib><creatorcontrib>Ma, Y M</creatorcontrib><creatorcontrib>Zou, G T</creatorcontrib><title>Superconductivity and lattice instability in face-centered cubic lanthanum under high pressure</title><title>Journal of physics. Condensed matter</title><description>The lattice dynamics and superconductivity of face-centered cubic (fcc) La under pressure are extensively studied using the linear-response methods within the framework of density-functional theory. A pressure-induced softening transverse acoustic (TA) phonon mode at the L point of the Brillouin zone is identified and the phonon softening pressure was predicted to be ~4.92 GPa, which coincides with the experimentally observed second-order phase transition pressure of ~5.3 GPa from fcc to distorted fcc. Moreover, no elastic instability is found under compression. Analysis of the calculated results suggests that the TA phonon instability is the driving force for this second-order phase transition. Furthermore, the current electron-phonon coupling (EPC) calculations suggest that the experimental observation of elevated superconducting transition temperature Tc with pressure is from the increased EPC strength and the softening TA phonon.</description><subject>Condensed matter: electronic structure, electrical, magnetic, and optical properties</subject><subject>Exact sciences and technology</subject><subject>Metals, alloys and compounds (a15, 001c15, laves phases, chevrel phases, borocarbides, etc.)</subject><subject>Phonons</subject><subject>Physics</subject><subject>Properties of type I and type II superconductors</subject><subject>Superconducting materials (excluding high-tc compounds)</subject><subject>Superconductivity</subject><issn>0953-8984</issn><issn>1361-648X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2007</creationdate><recordtype>article</recordtype><recordid>eNqFkE1LAzEQhoMoWKt_Qfait7VJNskmRyl-QcGDCp4MaTaxkW12TbJC_70pW-pBQRgYmHne-XgBOEfwCkHOZ1DQquSCkxkSM4JzUFyRAzBBFUMlI_z1EEz20DE4ifEDQkh4RSbg7WnoTdCdbwad3JdLm0L5pmhVSk6bwvmY1NK127rzhVXalNr4ZIJpCj0snc6oTyvlh3Ux-MaEYuXeV0UfTIxDMKfgyKo2mrNdnoKX25vn-X25eLx7mF8vSl0JlkqEidaWYWisXqqaI7qkggkhrGCqbhRDumIWY8uo4kzAmjYQQ4Ko4FnQiGoKLse5feg-BxOTXLuoTZuPM90QZQVFfrfmGWQjqEMXYzBW9sGtVdhIBOXWTrl1Sm6dkkhIguVoZxZe7DaoqFVrg_LaxR-1wJhyTDNXjpzr-n3375myb2zm0W_-n1u-AUKnkxs</recordid><startdate>20071024</startdate><enddate>20071024</enddate><creator>Gao, G Y</creator><creator>Niu, Y L</creator><creator>Cui, T</creator><creator>Zhang, L J</creator><creator>Li, Y</creator><creator>Xie, Y</creator><creator>He, Z</creator><creator>Ma, Y M</creator><creator>Zou, G T</creator><general>IOP Publishing</general><general>Institute of Physics</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7U5</scope><scope>8FD</scope><scope>L7M</scope></search><sort><creationdate>20071024</creationdate><title>Superconductivity and lattice instability in face-centered cubic lanthanum under high pressure</title><author>Gao, G Y ; Niu, Y L ; Cui, T ; Zhang, L J ; Li, Y ; Xie, Y ; He, Z ; Ma, Y M ; Zou, G T</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c396t-124ccf620efcba7815b596999f96a7da61c36f22f65a869075d02041598fcbd93</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2007</creationdate><topic>Condensed matter: electronic structure, electrical, magnetic, and optical properties</topic><topic>Exact sciences and technology</topic><topic>Metals, alloys and compounds (a15, 001c15, laves phases, chevrel phases, borocarbides, etc.)</topic><topic>Phonons</topic><topic>Physics</topic><topic>Properties of type I and type II superconductors</topic><topic>Superconducting materials (excluding high-tc compounds)</topic><topic>Superconductivity</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Gao, G Y</creatorcontrib><creatorcontrib>Niu, Y L</creatorcontrib><creatorcontrib>Cui, T</creatorcontrib><creatorcontrib>Zhang, L J</creatorcontrib><creatorcontrib>Li, Y</creatorcontrib><creatorcontrib>Xie, Y</creatorcontrib><creatorcontrib>He, Z</creatorcontrib><creatorcontrib>Ma, Y M</creatorcontrib><creatorcontrib>Zou, G T</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Journal of physics. Condensed matter</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Gao, G Y</au><au>Niu, Y L</au><au>Cui, T</au><au>Zhang, L J</au><au>Li, Y</au><au>Xie, Y</au><au>He, Z</au><au>Ma, Y M</au><au>Zou, G T</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Superconductivity and lattice instability in face-centered cubic lanthanum under high pressure</atitle><jtitle>Journal of physics. Condensed matter</jtitle><date>2007-10-24</date><risdate>2007</risdate><volume>19</volume><issue>42</issue><spage>425234</spage><epage>425234 (9)</epage><pages>425234-425234 (9)</pages><issn>0953-8984</issn><eissn>1361-648X</eissn><coden>JCOMEL</coden><abstract>The lattice dynamics and superconductivity of face-centered cubic (fcc) La under pressure are extensively studied using the linear-response methods within the framework of density-functional theory. A pressure-induced softening transverse acoustic (TA) phonon mode at the L point of the Brillouin zone is identified and the phonon softening pressure was predicted to be ~4.92 GPa, which coincides with the experimentally observed second-order phase transition pressure of ~5.3 GPa from fcc to distorted fcc. Moreover, no elastic instability is found under compression. Analysis of the calculated results suggests that the TA phonon instability is the driving force for this second-order phase transition. Furthermore, the current electron-phonon coupling (EPC) calculations suggest that the experimental observation of elevated superconducting transition temperature Tc with pressure is from the increased EPC strength and the softening TA phonon.</abstract><cop>Bristol</cop><pub>IOP Publishing</pub><doi>10.1088/0953-8984/19/42/425234</doi></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0953-8984 |
| ispartof | Journal of physics. Condensed matter, 2007-10, Vol.19 (42), p.425234-425234 (9) |
| issn | 0953-8984 1361-648X |
| language | eng |
| recordid | cdi_pascalfrancis_primary_19225825 |
| source | IOP Publishing Journals; Institute of Physics (IOP) Journals - HEAL-Link |
| subjects | Condensed matter: electronic structure, electrical, magnetic, and optical properties Exact sciences and technology Metals, alloys and compounds (a15, 001c15, laves phases, chevrel phases, borocarbides, etc.) Phonons Physics Properties of type I and type II superconductors Superconducting materials (excluding high-tc compounds) Superconductivity |
| title | Superconductivity and lattice instability in face-centered cubic lanthanum under high pressure |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-02-19T23%3A08%3A22IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_pasca&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Superconductivity%20and%20lattice%20instability%20in%20face-centered%20cubic%20lanthanum%20under%20high%20pressure&rft.jtitle=Journal%20of%20physics.%20Condensed%20matter&rft.au=Gao,%20G%20Y&rft.date=2007-10-24&rft.volume=19&rft.issue=42&rft.spage=425234&rft.epage=425234%20(9)&rft.pages=425234-425234%20(9)&rft.issn=0953-8984&rft.eissn=1361-648X&rft.coden=JCOMEL&rft_id=info:doi/10.1088/0953-8984/19/42/425234&rft_dat=%3Cproquest_pasca%3E30983478%3C/proquest_pasca%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=30983478&rft_id=info:pmid/&rfr_iscdi=true |