Magnon Pairs and Spin-Nematic Correlation in the Spin Seebeck Effect
Investigating exotic magnetic materials with spintronic techniques is effective at advancing magnetism as well as spintronics. In this work, we report unusual field-induced suppression of the spin Seebeck effect (SSE) in a quasi-one-dimensional frustrated spin-12 magnet LiCuVO4, known to exhibit spi...
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| Veröffentlicht in: | Physical review letters 2019-09, Vol.123 (11), p.1, Article 117202 |
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| creator | Hirobe, Daichi Sato, Masahiro Hagihala, Masato Shiomi, Yuki Masuda, Takatsugu Saitoh, Eiji |
| description | Investigating exotic magnetic materials with spintronic techniques is effective at advancing magnetism as well as spintronics. In this work, we report unusual field-induced suppression of the spin Seebeck effect (SSE) in a quasi-one-dimensional frustrated spin-12 magnet LiCuVO4, known to exhibit spin-nematic correlation in a wide range of external magnetic field B. The suppression takes place above |B|≳2 T in spite of the B-linear isothermal magnetization curves in the same B range. The result can be attributed to the growth of the spin-nematic correlation while increasing B. The correlation stabilizes magnon pairs carrying spin 2, thereby suppressing the interfacial spin injection of SSE by preventing the spin-1 exchange between single magnons and conduction electrons at the interface. This interpretation is supported by integrating thermodynamic measurements and theoretical analysis on the SSE. |
| doi_str_mv | 10.1103/PhysRevLett.123.117202 |
| format | Article |
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In this work, we report unusual field-induced suppression of the spin Seebeck effect (SSE) in a quasi-one-dimensional frustrated spin-12 magnet LiCuVO4, known to exhibit spin-nematic correlation in a wide range of external magnetic field B. The suppression takes place above |B|≳2 T in spite of the B-linear isothermal magnetization curves in the same B range. The result can be attributed to the growth of the spin-nematic correlation while increasing B. The correlation stabilizes magnon pairs carrying spin 2, thereby suppressing the interfacial spin injection of SSE by preventing the spin-1 exchange between single magnons and conduction electrons at the interface. This interpretation is supported by integrating thermodynamic measurements and theoretical analysis on the SSE.</description><identifier>ISSN: 0031-9007</identifier><identifier>EISSN: 1079-7114</identifier><identifier>DOI: 10.1103/PhysRevLett.123.117202</identifier><language>eng</language><publisher>College Park: American Physical Society</publisher><subject>Conduction electrons ; Correlation ; Magnetic materials ; Magnetism ; Magnetization curves ; Magnons ; Seebeck effect ; Spintronics</subject><ispartof>Physical review letters, 2019-09, Vol.123 (11), p.1, Article 117202</ispartof><rights>Copyright American Physical Society Sep 13, 2019</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c283t-7d73d9226c448505fe067917720fff21bf2e4a21d31838da77e340f49534e3573</citedby><cites>FETCH-LOGICAL-c283t-7d73d9226c448505fe067917720fff21bf2e4a21d31838da77e340f49534e3573</cites><orcidid>0000-0002-1469-8847</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,2876,2877,27924,27925</link.rule.ids></links><search><creatorcontrib>Hirobe, Daichi</creatorcontrib><creatorcontrib>Sato, Masahiro</creatorcontrib><creatorcontrib>Hagihala, Masato</creatorcontrib><creatorcontrib>Shiomi, Yuki</creatorcontrib><creatorcontrib>Masuda, Takatsugu</creatorcontrib><creatorcontrib>Saitoh, Eiji</creatorcontrib><title>Magnon Pairs and Spin-Nematic Correlation in the Spin Seebeck Effect</title><title>Physical review letters</title><description>Investigating exotic magnetic materials with spintronic techniques is effective at advancing magnetism as well as spintronics. In this work, we report unusual field-induced suppression of the spin Seebeck effect (SSE) in a quasi-one-dimensional frustrated spin-12 magnet LiCuVO4, known to exhibit spin-nematic correlation in a wide range of external magnetic field B. The suppression takes place above |B|≳2 T in spite of the B-linear isothermal magnetization curves in the same B range. The result can be attributed to the growth of the spin-nematic correlation while increasing B. The correlation stabilizes magnon pairs carrying spin 2, thereby suppressing the interfacial spin injection of SSE by preventing the spin-1 exchange between single magnons and conduction electrons at the interface. 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| source | American Physical Society Journals; EZB-FREE-00999 freely available EZB journals |
| subjects | Conduction electrons Correlation Magnetic materials Magnetism Magnetization curves Magnons Seebeck effect Spintronics |
| title | Magnon Pairs and Spin-Nematic Correlation in the Spin Seebeck Effect |
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