Infrared Spectroscopy of Tunable Dirac Terahertz Magneto-Plasmons in Graphene
We present infrared spectroscopy study of plasmon excitations in graphene in high magnetic fields. The plasmon resonance in patterned graphene disks splits into edge and bulk plasmon modes in magnetic fields. Remarkably, the edge plasmons develop increasingly longer lifetimes in high fields due to t...
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| Veröffentlicht in: | Nano letters 2012-07, Vol.12 (7), p.3766-3771 |
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| container_title | Nano letters |
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| creator | Yan, Hugen Li, Zhiqiang Li, Xuesong Zhu, Wenjuan Avouris, Phaedon Xia, Fengnian |
| description | We present infrared spectroscopy study of plasmon excitations in graphene in high magnetic fields. The plasmon resonance in patterned graphene disks splits into edge and bulk plasmon modes in magnetic fields. Remarkably, the edge plasmons develop increasingly longer lifetimes in high fields due to the suppression of backscattering. Moreover, due to the linear band structure of graphene, the splitting of the edge and bulk plasmon modes develops a strong doping dependence, which differs from the behavior of conventional semiconductor two-dimensional electron gas (2DEG) systems. We also observe the appearance of a higher order mode indicating an anharmonic confinement potential even in these well-defined circular disks. Our work not only opens an avenue for the investigation of the properties of Dirac magnetoplasmons but also supports the great potential of graphene for tunable terahertz magneto-optical devices. |
| doi_str_mv | 10.1021/nl3016335 |
| format | Article |
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The plasmon resonance in patterned graphene disks splits into edge and bulk plasmon modes in magnetic fields. Remarkably, the edge plasmons develop increasingly longer lifetimes in high fields due to the suppression of backscattering. Moreover, due to the linear band structure of graphene, the splitting of the edge and bulk plasmon modes develops a strong doping dependence, which differs from the behavior of conventional semiconductor two-dimensional electron gas (2DEG) systems. We also observe the appearance of a higher order mode indicating an anharmonic confinement potential even in these well-defined circular disks. Our work not only opens an avenue for the investigation of the properties of Dirac magnetoplasmons but also supports the great potential of graphene for tunable terahertz magneto-optical devices.</description><identifier>ISSN: 1530-6984</identifier><identifier>EISSN: 1530-6992</identifier><identifier>DOI: 10.1021/nl3016335</identifier><identifier>PMID: 22690695</identifier><language>eng</language><publisher>Washington, DC: American Chemical Society</publisher><subject>Collective excitations (including excitons, polarons, plasmons and other charge-density excitations) ; Condensed matter: electronic structure, electrical, magnetic, and optical properties ; Cross-disciplinary physics: materials science; rheology ; Devices ; Disks ; Electronic structure and electrical properties of surfaces, interfaces, thin films and low-dimensional structures ; Electronic structure of nanoscale materials : clusters, nanoparticles, nanotubes, and nanocrystals ; Exact sciences and technology ; Fullerenes and related materials; diamonds, graphite ; Graphene ; Infrared spectroscopy ; Magnetic fields ; Magnetic properties ; Materials science ; Nanostructure ; Physics ; Plasmons ; Semiconductors ; Specific materials ; Surface and interface electron states</subject><ispartof>Nano letters, 2012-07, Vol.12 (7), p.3766-3771</ispartof><rights>Copyright © 2012 American Chemical Society</rights><rights>2015 INIST-CNRS</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a479t-2ffad07918534ba66e32eec55057bd1b5205a82f08242a8fed177a5e4d77d4413</citedby><cites>FETCH-LOGICAL-a479t-2ffad07918534ba66e32eec55057bd1b5205a82f08242a8fed177a5e4d77d4413</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://pubs.acs.org/doi/pdf/10.1021/nl3016335$$EPDF$$P50$$Gacs$$H</linktopdf><linktohtml>$$Uhttps://pubs.acs.org/doi/10.1021/nl3016335$$EHTML$$P50$$Gacs$$H</linktohtml><link.rule.ids>314,776,780,2752,27053,27901,27902,56713,56763</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=26144708$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/22690695$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Yan, Hugen</creatorcontrib><creatorcontrib>Li, Zhiqiang</creatorcontrib><creatorcontrib>Li, Xuesong</creatorcontrib><creatorcontrib>Zhu, Wenjuan</creatorcontrib><creatorcontrib>Avouris, Phaedon</creatorcontrib><creatorcontrib>Xia, Fengnian</creatorcontrib><title>Infrared Spectroscopy of Tunable Dirac Terahertz Magneto-Plasmons in Graphene</title><title>Nano letters</title><addtitle>Nano Lett</addtitle><description>We present infrared spectroscopy study of plasmon excitations in graphene in high magnetic fields. The plasmon resonance in patterned graphene disks splits into edge and bulk plasmon modes in magnetic fields. Remarkably, the edge plasmons develop increasingly longer lifetimes in high fields due to the suppression of backscattering. Moreover, due to the linear band structure of graphene, the splitting of the edge and bulk plasmon modes develops a strong doping dependence, which differs from the behavior of conventional semiconductor two-dimensional electron gas (2DEG) systems. We also observe the appearance of a higher order mode indicating an anharmonic confinement potential even in these well-defined circular disks. Our work not only opens an avenue for the investigation of the properties of Dirac magnetoplasmons but also supports the great potential of graphene for tunable terahertz magneto-optical devices.</description><subject>Collective excitations (including excitons, polarons, plasmons and other charge-density excitations)</subject><subject>Condensed matter: electronic structure, electrical, magnetic, and optical properties</subject><subject>Cross-disciplinary physics: materials science; rheology</subject><subject>Devices</subject><subject>Disks</subject><subject>Electronic structure and electrical properties of surfaces, interfaces, thin films and low-dimensional structures</subject><subject>Electronic structure of nanoscale materials : clusters, nanoparticles, nanotubes, and nanocrystals</subject><subject>Exact sciences and technology</subject><subject>Fullerenes and related materials; diamonds, graphite</subject><subject>Graphene</subject><subject>Infrared spectroscopy</subject><subject>Magnetic fields</subject><subject>Magnetic properties</subject><subject>Materials science</subject><subject>Nanostructure</subject><subject>Physics</subject><subject>Plasmons</subject><subject>Semiconductors</subject><subject>Specific materials</subject><subject>Surface and interface electron states</subject><issn>1530-6984</issn><issn>1530-6992</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><recordid>eNqN0MtK7EAQgOFGFPWMLnwByUbQRbT6nixlvBxBUXBch0qnopFMJ3YnC316I84ZN2fhqmrxUQU_YwccTjkIfuZbCdxIqTfYLtcSUpPnYnO9Z2qH_YnxFQByqWGb7QhhcjC53mV3N74OGKhKHntyQ-ii6_r3pKuTxeixbCm5aAK6ZEEBXygMH8kdPnsauvShxbjsfEwan1wH7F_I0x7bqrGNtL-aM_Z0dbmY_01v769v5ue3KSqbD6moa6zA5jzTUpVoDElB5LQGbcuKl1qAxkzUkAklMKup4taiJlVZWynF5Ywdf9_tQ_c2UhyKZRMdtS166sZYcGsEqFyaX1AQyigNU74ZO_mmbsoQA9VFH5olhvcJfTlerENP9nB1diyXVK3lv7ITOFoBjA7bKbJ3TfxxhitlIftx6GLx2o3BT-H-8_ATb_KPVw</recordid><startdate>20120711</startdate><enddate>20120711</enddate><creator>Yan, Hugen</creator><creator>Li, Zhiqiang</creator><creator>Li, Xuesong</creator><creator>Zhu, Wenjuan</creator><creator>Avouris, Phaedon</creator><creator>Xia, Fengnian</creator><general>American Chemical Society</general><scope>IQODW</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope><scope>7SR</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope><scope>L7M</scope></search><sort><creationdate>20120711</creationdate><title>Infrared Spectroscopy of Tunable Dirac Terahertz Magneto-Plasmons in Graphene</title><author>Yan, Hugen ; Li, Zhiqiang ; Li, Xuesong ; Zhu, Wenjuan ; Avouris, Phaedon ; Xia, Fengnian</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a479t-2ffad07918534ba66e32eec55057bd1b5205a82f08242a8fed177a5e4d77d4413</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2012</creationdate><topic>Collective excitations (including excitons, polarons, plasmons and other charge-density excitations)</topic><topic>Condensed matter: electronic structure, electrical, magnetic, and optical properties</topic><topic>Cross-disciplinary physics: materials science; rheology</topic><topic>Devices</topic><topic>Disks</topic><topic>Electronic structure and electrical properties of surfaces, interfaces, thin films and low-dimensional structures</topic><topic>Electronic structure of nanoscale materials : clusters, nanoparticles, nanotubes, and nanocrystals</topic><topic>Exact sciences and technology</topic><topic>Fullerenes and related materials; diamonds, graphite</topic><topic>Graphene</topic><topic>Infrared spectroscopy</topic><topic>Magnetic fields</topic><topic>Magnetic properties</topic><topic>Materials science</topic><topic>Nanostructure</topic><topic>Physics</topic><topic>Plasmons</topic><topic>Semiconductors</topic><topic>Specific materials</topic><topic>Surface and interface electron states</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Yan, Hugen</creatorcontrib><creatorcontrib>Li, Zhiqiang</creatorcontrib><creatorcontrib>Li, Xuesong</creatorcontrib><creatorcontrib>Zhu, Wenjuan</creatorcontrib><creatorcontrib>Avouris, Phaedon</creatorcontrib><creatorcontrib>Xia, Fengnian</creatorcontrib><collection>Pascal-Francis</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><collection>Engineered Materials Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Nano letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Yan, Hugen</au><au>Li, Zhiqiang</au><au>Li, Xuesong</au><au>Zhu, Wenjuan</au><au>Avouris, Phaedon</au><au>Xia, Fengnian</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Infrared Spectroscopy of Tunable Dirac Terahertz Magneto-Plasmons in Graphene</atitle><jtitle>Nano letters</jtitle><addtitle>Nano Lett</addtitle><date>2012-07-11</date><risdate>2012</risdate><volume>12</volume><issue>7</issue><spage>3766</spage><epage>3771</epage><pages>3766-3771</pages><issn>1530-6984</issn><eissn>1530-6992</eissn><abstract>We present infrared spectroscopy study of plasmon excitations in graphene in high magnetic fields. The plasmon resonance in patterned graphene disks splits into edge and bulk plasmon modes in magnetic fields. Remarkably, the edge plasmons develop increasingly longer lifetimes in high fields due to the suppression of backscattering. Moreover, due to the linear band structure of graphene, the splitting of the edge and bulk plasmon modes develops a strong doping dependence, which differs from the behavior of conventional semiconductor two-dimensional electron gas (2DEG) systems. We also observe the appearance of a higher order mode indicating an anharmonic confinement potential even in these well-defined circular disks. Our work not only opens an avenue for the investigation of the properties of Dirac magnetoplasmons but also supports the great potential of graphene for tunable terahertz magneto-optical devices.</abstract><cop>Washington, DC</cop><pub>American Chemical Society</pub><pmid>22690695</pmid><doi>10.1021/nl3016335</doi><tpages>6</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | Collective excitations (including excitons, polarons, plasmons and other charge-density excitations) Condensed matter: electronic structure, electrical, magnetic, and optical properties Cross-disciplinary physics: materials science rheology Devices Disks Electronic structure and electrical properties of surfaces, interfaces, thin films and low-dimensional structures Electronic structure of nanoscale materials : clusters, nanoparticles, nanotubes, and nanocrystals Exact sciences and technology Fullerenes and related materials diamonds, graphite Graphene Infrared spectroscopy Magnetic fields Magnetic properties Materials science Nanostructure Physics Plasmons Semiconductors Specific materials Surface and interface electron states |
| title | Infrared Spectroscopy of Tunable Dirac Terahertz Magneto-Plasmons in Graphene |
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