Broad Linewidth of Antiferromagnetic Spin Wave due to Electron Correlation
We study magnetic excitations in a bilayer of an antiferromagnetic (AF) insulator and a correlated metal, in which double occupancy is forbidden. The effective action of the AF spin wave in the AF insulator is derived by using the path integral formula within the second order of interplane coupling....
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| Veröffentlicht in: | Journal of the Physical Society of Japan 2017-12, Vol.86 (12), p.124705 |
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| container_title | Journal of the Physical Society of Japan |
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| creator | Mori, Michiyasu |
| description | We study magnetic excitations in a bilayer of an antiferromagnetic (AF) insulator and a correlated metal, in which double occupancy is forbidden. The effective action of the AF spin wave in the AF insulator is derived by using the path integral formula within the second order of interplane coupling. The electron correlation in the correlated metal is treated by the Gutzwiller approximation, which renormalizes the hopping integrals by gt as proportional to the hole density. The linewidth of the AF spin wave excitations originates from particle-hole excitations in the correlated metal. By increasing the correlation effect, i.e., by decreasing gt, it is found that the linewidth at low energies increases inversely proportional to gt. The present results will also be useful for bilayers of a metal and ferrimagnet. |
| doi_str_mv | 10.7566/JPSJ.86.124705 |
| format | Article |
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The effective action of the AF spin wave in the AF insulator is derived by using the path integral formula within the second order of interplane coupling. The electron correlation in the correlated metal is treated by the Gutzwiller approximation, which renormalizes the hopping integrals by gt as proportional to the hole density. The linewidth of the AF spin wave excitations originates from particle-hole excitations in the correlated metal. By increasing the correlation effect, i.e., by decreasing gt, it is found that the linewidth at low energies increases inversely proportional to gt. The present results will also be useful for bilayers of a metal and ferrimagnet.</description><identifier>ISSN: 0031-9015</identifier><identifier>EISSN: 1347-4073</identifier><identifier>DOI: 10.7566/JPSJ.86.124705</identifier><language>eng</language><publisher>Tokyo: The Physical Society of Japan</publisher><subject>Antiferromagnetism ; Correlation analysis ; Electron spin ; Electrons ; Ferrimagnetism ; Hole density ; Insulation ; Integrals ; Magnetic fields ; Particle spin</subject><ispartof>Journal of the Physical Society of Japan, 2017-12, Vol.86 (12), p.124705</ispartof><rights>Copyright The Physical Society of Japan Dec 15, 2017</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c400t-abe9e994db7dc73f082a1f7efc9f347c715fd5d24cc08715b7780335dfa3c5143</citedby><cites>FETCH-LOGICAL-c400t-abe9e994db7dc73f082a1f7efc9f347c715fd5d24cc08715b7780335dfa3c5143</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27923,27924</link.rule.ids></links><search><creatorcontrib>Mori, Michiyasu</creatorcontrib><title>Broad Linewidth of Antiferromagnetic Spin Wave due to Electron Correlation</title><title>Journal of the Physical Society of Japan</title><description>We study magnetic excitations in a bilayer of an antiferromagnetic (AF) insulator and a correlated metal, in which double occupancy is forbidden. The effective action of the AF spin wave in the AF insulator is derived by using the path integral formula within the second order of interplane coupling. The electron correlation in the correlated metal is treated by the Gutzwiller approximation, which renormalizes the hopping integrals by gt as proportional to the hole density. The linewidth of the AF spin wave excitations originates from particle-hole excitations in the correlated metal. By increasing the correlation effect, i.e., by decreasing gt, it is found that the linewidth at low energies increases inversely proportional to gt. The present results will also be useful for bilayers of a metal and ferrimagnet.</description><subject>Antiferromagnetism</subject><subject>Correlation analysis</subject><subject>Electron spin</subject><subject>Electrons</subject><subject>Ferrimagnetism</subject><subject>Hole density</subject><subject>Insulation</subject><subject>Integrals</subject><subject>Magnetic fields</subject><subject>Particle spin</subject><issn>0031-9015</issn><issn>1347-4073</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><recordid>eNotkEtLAzEUhYMoWKtb1wHXM95MkslkWUt9lIJCFZchzUNT2qRmUsV_75S6uhz4OOfyIXRNoBa8bW_nL8t53bU1aZgAfoJGhDJRMRD0FI0AKKkkEH6OLvp-DdDwgRuh-V1O2uJFiO4n2PKJk8eTWIJ3Oaet_oiuBIOXuxDxu_522O4dLgnPNs6UnCKeppzdRpeQ4iU683rTu6v_O0Zv97PX6WO1eH54mk4WlWEApdIrJ52UzK6ENYJ66BpNvHDeSD88bATh3nLbMGOgG8JKiA4o5dZrajhhdIxujr27nL72ri9qnfY5DpOKSElAcujkQNVHyuTU99l5tcthq_OvIqAOvtTBl-padfRF_wDmDF2l</recordid><startdate>20171215</startdate><enddate>20171215</enddate><creator>Mori, Michiyasu</creator><general>The Physical Society of Japan</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7U5</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope></search><sort><creationdate>20171215</creationdate><title>Broad Linewidth of Antiferromagnetic Spin Wave due to Electron Correlation</title><author>Mori, Michiyasu</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c400t-abe9e994db7dc73f082a1f7efc9f347c715fd5d24cc08715b7780335dfa3c5143</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2017</creationdate><topic>Antiferromagnetism</topic><topic>Correlation analysis</topic><topic>Electron spin</topic><topic>Electrons</topic><topic>Ferrimagnetism</topic><topic>Hole density</topic><topic>Insulation</topic><topic>Integrals</topic><topic>Magnetic fields</topic><topic>Particle spin</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Mori, Michiyasu</creatorcontrib><collection>CrossRef</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Journal of the Physical Society of Japan</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Mori, Michiyasu</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Broad Linewidth of Antiferromagnetic Spin Wave due to Electron Correlation</atitle><jtitle>Journal of the Physical Society of Japan</jtitle><date>2017-12-15</date><risdate>2017</risdate><volume>86</volume><issue>12</issue><spage>124705</spage><pages>124705-</pages><issn>0031-9015</issn><eissn>1347-4073</eissn><abstract>We study magnetic excitations in a bilayer of an antiferromagnetic (AF) insulator and a correlated metal, in which double occupancy is forbidden. The effective action of the AF spin wave in the AF insulator is derived by using the path integral formula within the second order of interplane coupling. The electron correlation in the correlated metal is treated by the Gutzwiller approximation, which renormalizes the hopping integrals by gt as proportional to the hole density. The linewidth of the AF spin wave excitations originates from particle-hole excitations in the correlated metal. By increasing the correlation effect, i.e., by decreasing gt, it is found that the linewidth at low energies increases inversely proportional to gt. The present results will also be useful for bilayers of a metal and ferrimagnet.</abstract><cop>Tokyo</cop><pub>The Physical Society of Japan</pub><doi>10.7566/JPSJ.86.124705</doi><oa>free_for_read</oa></addata></record> |
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| language | eng |
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| subjects | Antiferromagnetism Correlation analysis Electron spin Electrons Ferrimagnetism Hole density Insulation Integrals Magnetic fields Particle spin |
| title | Broad Linewidth of Antiferromagnetic Spin Wave due to Electron Correlation |
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