Signatures of pairing in the magnetic excitation spectrum of strongly correlated two-leg ladders
Magnetic interactions are widely believed to play a crucial role in the microscopic mechanism leading to high critical temperature superconductivity. It is therefore important to study the signatures of pairing in the magnetic excitation spectrum of simple models known to show unconventional superco...
Gespeichert in:
Veröffentlicht in: | Physical review. B 2017-11, Vol.96 (20), Article 205120 |
---|---|
Hauptverfasser: | , , , |
Format: | Artikel |
Sprache: | eng |
Schlagworte: | |
Online-Zugang: | Volltext |
Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
container_end_page | |
---|---|
container_issue | 20 |
container_start_page | |
container_title | Physical review. B |
container_volume | 96 |
creator | Nocera, A. Patel, N. D. Dagotto, E. Alvarez, G. |
description | Magnetic interactions are widely believed to play a crucial role in the microscopic mechanism leading to high critical temperature superconductivity. It is therefore important to study the signatures of pairing in the magnetic excitation spectrum of simple models known to show unconventional superconducting tendencies. Using the density matrix renormalization group technique, we calculate the dynamical spin structure factor S(k,ω) of a generalized t−U−J Hubbard model away from half filling in a two-leg ladder geometry. The addition of J enhances pairing tendencies. We analyze quantitatively the signatures of pairing in the magnetic excitation spectra. We found that the superconducting pair-correlation strength, that can be estimated independently from ground state properties, is closely correlated with the integrated low-energy magnetic spectral weight in the vicinity of (π,π). In this wave-vector region, robust spin incommensurate features develop with increasing doping. The branch of the spectrum with rung direction wave vector krung=0 does not change substantially with doping where pairing dominates and thus plays a minor role. We discuss the implications of our results for neutron scattering experiments, where the spin excitation dynamics of hole-doped quasi-one-dimensional magnetic materials can be measured and also address implications for recent resonant inelastic x-ray scattering experiments. |
doi_str_mv | 10.1103/PhysRevB.96.205120 |
format | Article |
fullrecord | <record><control><sourceid>proquest_osti_</sourceid><recordid>TN_cdi_osti_scitechconnect_1413613</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>2123183862</sourcerecordid><originalsourceid>FETCH-LOGICAL-c412t-bf64df5e5bfa096594234c341d6e28fcc1466e6c7a3e8bfa8074d33e878755dd3</originalsourceid><addsrcrecordid>eNo9kMlOwzAURSMEElXpD7CyYJ3iKU68hIpJqgRiWBvXeUldpXaxHaB_T1CA1buLo6ejk2WnBM8Jwezicb2PT_BxNZdiTnFBKD7IJpQLmUsp5OH_LvBxNotxgzEmAssSy0n29mxbp1MfICLfoJ22wboWWYfSGtBWtw6SNQi-jE06We9Q3IFJod_-4DEF79puj4wPATqdoEbp0-cdtKjTdQ0hnmRHje4izH7vNHu9uX5Z3OXLh9v7xeUyN5zQlK8aweumgGLVaCxFITll3DBOagG0aowhXAgQptQMqoGpcMlrNuyyKouirtk0Oxv_-pisioMumLXxzg22inDCBGEDdD5Cu-Dfe4hJbXwf3OClKKGMVKwSdKDoSJngYwzQqF2wWx32imD1U1z9FVdSqLE4-wYZYXaU</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>2123183862</pqid></control><display><type>article</type><title>Signatures of pairing in the magnetic excitation spectrum of strongly correlated two-leg ladders</title><source>American Physical Society Journals</source><creator>Nocera, A. ; Patel, N. D. ; Dagotto, E. ; Alvarez, G.</creator><creatorcontrib>Nocera, A. ; Patel, N. D. ; Dagotto, E. ; Alvarez, G. ; Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)</creatorcontrib><description>Magnetic interactions are widely believed to play a crucial role in the microscopic mechanism leading to high critical temperature superconductivity. It is therefore important to study the signatures of pairing in the magnetic excitation spectrum of simple models known to show unconventional superconducting tendencies. Using the density matrix renormalization group technique, we calculate the dynamical spin structure factor S(k,ω) of a generalized t−U−J Hubbard model away from half filling in a two-leg ladder geometry. The addition of J enhances pairing tendencies. We analyze quantitatively the signatures of pairing in the magnetic excitation spectra. We found that the superconducting pair-correlation strength, that can be estimated independently from ground state properties, is closely correlated with the integrated low-energy magnetic spectral weight in the vicinity of (π,π). In this wave-vector region, robust spin incommensurate features develop with increasing doping. The branch of the spectrum with rung direction wave vector krung=0 does not change substantially with doping where pairing dominates and thus plays a minor role. We discuss the implications of our results for neutron scattering experiments, where the spin excitation dynamics of hole-doped quasi-one-dimensional magnetic materials can be measured and also address implications for recent resonant inelastic x-ray scattering experiments.</description><identifier>ISSN: 2469-9950</identifier><identifier>EISSN: 2469-9969</identifier><identifier>DOI: 10.1103/PhysRevB.96.205120</identifier><language>eng</language><publisher>College Park: American Physical Society</publisher><subject>CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY ; Correlation ; Doping ; Excitation spectra ; Inelastic scattering ; Ladders ; Magnetic materials ; Magnetic properties ; Neutron scattering ; Signatures ; Spin dynamics ; Spin structure ; Structure factor ; Superconductivity ; Weight ; X-ray scattering</subject><ispartof>Physical review. B, 2017-11, Vol.96 (20), Article 205120</ispartof><rights>Copyright American Physical Society Nov 15, 2017</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c412t-bf64df5e5bfa096594234c341d6e28fcc1466e6c7a3e8bfa8074d33e878755dd3</citedby><cites>FETCH-LOGICAL-c412t-bf64df5e5bfa096594234c341d6e28fcc1466e6c7a3e8bfa8074d33e878755dd3</cites><orcidid>0000000197226388 ; 0000000214968261</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,314,776,780,881,2862,2863,27903,27904</link.rule.ids><backlink>$$Uhttps://www.osti.gov/servlets/purl/1413613$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Nocera, A.</creatorcontrib><creatorcontrib>Patel, N. D.</creatorcontrib><creatorcontrib>Dagotto, E.</creatorcontrib><creatorcontrib>Alvarez, G.</creatorcontrib><creatorcontrib>Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)</creatorcontrib><title>Signatures of pairing in the magnetic excitation spectrum of strongly correlated two-leg ladders</title><title>Physical review. B</title><description>Magnetic interactions are widely believed to play a crucial role in the microscopic mechanism leading to high critical temperature superconductivity. It is therefore important to study the signatures of pairing in the magnetic excitation spectrum of simple models known to show unconventional superconducting tendencies. Using the density matrix renormalization group technique, we calculate the dynamical spin structure factor S(k,ω) of a generalized t−U−J Hubbard model away from half filling in a two-leg ladder geometry. The addition of J enhances pairing tendencies. We analyze quantitatively the signatures of pairing in the magnetic excitation spectra. We found that the superconducting pair-correlation strength, that can be estimated independently from ground state properties, is closely correlated with the integrated low-energy magnetic spectral weight in the vicinity of (π,π). In this wave-vector region, robust spin incommensurate features develop with increasing doping. The branch of the spectrum with rung direction wave vector krung=0 does not change substantially with doping where pairing dominates and thus plays a minor role. We discuss the implications of our results for neutron scattering experiments, where the spin excitation dynamics of hole-doped quasi-one-dimensional magnetic materials can be measured and also address implications for recent resonant inelastic x-ray scattering experiments.</description><subject>CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY</subject><subject>Correlation</subject><subject>Doping</subject><subject>Excitation spectra</subject><subject>Inelastic scattering</subject><subject>Ladders</subject><subject>Magnetic materials</subject><subject>Magnetic properties</subject><subject>Neutron scattering</subject><subject>Signatures</subject><subject>Spin dynamics</subject><subject>Spin structure</subject><subject>Structure factor</subject><subject>Superconductivity</subject><subject>Weight</subject><subject>X-ray scattering</subject><issn>2469-9950</issn><issn>2469-9969</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><recordid>eNo9kMlOwzAURSMEElXpD7CyYJ3iKU68hIpJqgRiWBvXeUldpXaxHaB_T1CA1buLo6ejk2WnBM8Jwezicb2PT_BxNZdiTnFBKD7IJpQLmUsp5OH_LvBxNotxgzEmAssSy0n29mxbp1MfICLfoJ22wboWWYfSGtBWtw6SNQi-jE06We9Q3IFJod_-4DEF79puj4wPATqdoEbp0-cdtKjTdQ0hnmRHje4izH7vNHu9uX5Z3OXLh9v7xeUyN5zQlK8aweumgGLVaCxFITll3DBOagG0aowhXAgQptQMqoGpcMlrNuyyKouirtk0Oxv_-pisioMumLXxzg22inDCBGEDdD5Cu-Dfe4hJbXwf3OClKKGMVKwSdKDoSJngYwzQqF2wWx32imD1U1z9FVdSqLE4-wYZYXaU</recordid><startdate>20171113</startdate><enddate>20171113</enddate><creator>Nocera, A.</creator><creator>Patel, N. D.</creator><creator>Dagotto, E.</creator><creator>Alvarez, G.</creator><general>American Physical Society</general><general>American Physical Society (APS)</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>H8D</scope><scope>JG9</scope><scope>L7M</scope><scope>OIOZB</scope><scope>OTOTI</scope><orcidid>https://orcid.org/0000000197226388</orcidid><orcidid>https://orcid.org/0000000214968261</orcidid></search><sort><creationdate>20171113</creationdate><title>Signatures of pairing in the magnetic excitation spectrum of strongly correlated two-leg ladders</title><author>Nocera, A. ; Patel, N. D. ; Dagotto, E. ; Alvarez, G.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c412t-bf64df5e5bfa096594234c341d6e28fcc1466e6c7a3e8bfa8074d33e878755dd3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2017</creationdate><topic>CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY</topic><topic>Correlation</topic><topic>Doping</topic><topic>Excitation spectra</topic><topic>Inelastic scattering</topic><topic>Ladders</topic><topic>Magnetic materials</topic><topic>Magnetic properties</topic><topic>Neutron scattering</topic><topic>Signatures</topic><topic>Spin dynamics</topic><topic>Spin structure</topic><topic>Structure factor</topic><topic>Superconductivity</topic><topic>Weight</topic><topic>X-ray scattering</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Nocera, A.</creatorcontrib><creatorcontrib>Patel, N. D.</creatorcontrib><creatorcontrib>Dagotto, E.</creatorcontrib><creatorcontrib>Alvarez, G.</creatorcontrib><creatorcontrib>Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)</creatorcontrib><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Materials Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>OSTI.GOV - Hybrid</collection><collection>OSTI.GOV</collection><jtitle>Physical review. B</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Nocera, A.</au><au>Patel, N. D.</au><au>Dagotto, E.</au><au>Alvarez, G.</au><aucorp>Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Signatures of pairing in the magnetic excitation spectrum of strongly correlated two-leg ladders</atitle><jtitle>Physical review. B</jtitle><date>2017-11-13</date><risdate>2017</risdate><volume>96</volume><issue>20</issue><artnum>205120</artnum><issn>2469-9950</issn><eissn>2469-9969</eissn><abstract>Magnetic interactions are widely believed to play a crucial role in the microscopic mechanism leading to high critical temperature superconductivity. It is therefore important to study the signatures of pairing in the magnetic excitation spectrum of simple models known to show unconventional superconducting tendencies. Using the density matrix renormalization group technique, we calculate the dynamical spin structure factor S(k,ω) of a generalized t−U−J Hubbard model away from half filling in a two-leg ladder geometry. The addition of J enhances pairing tendencies. We analyze quantitatively the signatures of pairing in the magnetic excitation spectra. We found that the superconducting pair-correlation strength, that can be estimated independently from ground state properties, is closely correlated with the integrated low-energy magnetic spectral weight in the vicinity of (π,π). In this wave-vector region, robust spin incommensurate features develop with increasing doping. The branch of the spectrum with rung direction wave vector krung=0 does not change substantially with doping where pairing dominates and thus plays a minor role. We discuss the implications of our results for neutron scattering experiments, where the spin excitation dynamics of hole-doped quasi-one-dimensional magnetic materials can be measured and also address implications for recent resonant inelastic x-ray scattering experiments.</abstract><cop>College Park</cop><pub>American Physical Society</pub><doi>10.1103/PhysRevB.96.205120</doi><orcidid>https://orcid.org/0000000197226388</orcidid><orcidid>https://orcid.org/0000000214968261</orcidid><oa>free_for_read</oa></addata></record> |
fulltext | fulltext |
identifier | ISSN: 2469-9950 |
ispartof | Physical review. B, 2017-11, Vol.96 (20), Article 205120 |
issn | 2469-9950 2469-9969 |
language | eng |
recordid | cdi_osti_scitechconnect_1413613 |
source | American Physical Society Journals |
subjects | CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY Correlation Doping Excitation spectra Inelastic scattering Ladders Magnetic materials Magnetic properties Neutron scattering Signatures Spin dynamics Spin structure Structure factor Superconductivity Weight X-ray scattering |
title | Signatures of pairing in the magnetic excitation spectrum of strongly correlated two-leg ladders |
url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-23T17%3A47%3A07IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_osti_&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Signatures%20of%20pairing%20in%20the%20magnetic%20excitation%20spectrum%20of%20strongly%20correlated%20two-leg%20ladders&rft.jtitle=Physical%20review.%20B&rft.au=Nocera,%20A.&rft.aucorp=Oak%20Ridge%20National%20Lab.%20(ORNL),%20Oak%20Ridge,%20TN%20(United%20States)&rft.date=2017-11-13&rft.volume=96&rft.issue=20&rft.artnum=205120&rft.issn=2469-9950&rft.eissn=2469-9969&rft_id=info:doi/10.1103/PhysRevB.96.205120&rft_dat=%3Cproquest_osti_%3E2123183862%3C/proquest_osti_%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=2123183862&rft_id=info:pmid/&rfr_iscdi=true |