Elastic Soft Mode and Electric Quadrupole Response in Excitonic Insulator Candidate (Ta0.952V0.048)2NiSe5: Contribution of Electron–Phonon Interaction
We performed ultrasonic measurements on (Ta0.952V0.048)2NiSe5 to investigate the contribution of acoustic phonons at the zone center to structural and possible excitonic transitions. The transverse elastic constant C55 with irreducible representation B2g exhibits softening over 90% above a transitio...
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| Veröffentlicht in: | Journal of the Physical Society of Japan 2022-02, Vol.91 (2), p.024601 |
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| container_title | Journal of the Physical Society of Japan |
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| creator | Kurihara, Ryosuke Hirose, Yusuke Sano, Sumika Mitsumoto, Keisuke Miyake, Atsushi Tokunaga, Masashi Settai, Rikio |
| description | We performed ultrasonic measurements on (Ta0.952V0.048)2NiSe5 to investigate the contribution of acoustic phonons at the zone center to structural and possible excitonic transitions. The transverse elastic constant C55 with irreducible representation B2g exhibits softening over 90% above a transition temperature of Ts = 280 K, indicating the soft mode of corresponding TA phonons. Our analysis based on the quadrupole response indicates that the electron–phonon interaction contributes to the excitonic transition in addition to the hybridization between the conduction and valence bands if the excitonic transition is realized. |
| doi_str_mv | 10.7566/JPSJ.91.024601 |
| format | Article |
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The transverse elastic constant C55 with irreducible representation B2g exhibits softening over 90% above a transition temperature of Ts = 280 K, indicating the soft mode of corresponding TA phonons. Our analysis based on the quadrupole response indicates that the electron–phonon interaction contributes to the excitonic transition in addition to the hybridization between the conduction and valence bands if the excitonic transition is realized.</description><identifier>ISSN: 0031-9015</identifier><identifier>EISSN: 1347-4073</identifier><identifier>DOI: 10.7566/JPSJ.91.024601</identifier><language>eng</language><publisher>Tokyo: The Physical Society of Japan</publisher><subject>Elastic properties ; Electrons ; Phonons ; Quadrupoles ; Transition temperature ; Ultrasonic methods ; Valence band</subject><ispartof>Journal of the Physical Society of Japan, 2022-02, Vol.91 (2), p.024601</ispartof><rights>Copyright The Physical Society of Japan Feb 15, 2022</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,27901,27902</link.rule.ids></links><search><creatorcontrib>Kurihara, Ryosuke</creatorcontrib><creatorcontrib>Hirose, Yusuke</creatorcontrib><creatorcontrib>Sano, Sumika</creatorcontrib><creatorcontrib>Mitsumoto, Keisuke</creatorcontrib><creatorcontrib>Miyake, Atsushi</creatorcontrib><creatorcontrib>Tokunaga, Masashi</creatorcontrib><creatorcontrib>Settai, Rikio</creatorcontrib><title>Elastic Soft Mode and Electric Quadrupole Response in Excitonic Insulator Candidate (Ta0.952V0.048)2NiSe5: Contribution of Electron–Phonon Interaction</title><title>Journal of the Physical Society of Japan</title><description>We performed ultrasonic measurements on (Ta0.952V0.048)2NiSe5 to investigate the contribution of acoustic phonons at the zone center to structural and possible excitonic transitions. 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Our analysis based on the quadrupole response indicates that the electron–phonon interaction contributes to the excitonic transition in addition to the hybridization between the conduction and valence bands if the excitonic transition is realized.</description><subject>Elastic properties</subject><subject>Electrons</subject><subject>Phonons</subject><subject>Quadrupoles</subject><subject>Transition temperature</subject><subject>Ultrasonic methods</subject><subject>Valence band</subject><issn>0031-9015</issn><issn>1347-4073</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2022</creationdate><recordtype>article</recordtype><recordid>eNotj01LwzAcxoMoOKdXzwEvemj9561pvEmpujF1uul1ZE2KHSWZTQoe_Q5e_Hx-Eivu9MCP54UHoVMCqRRZdjmdL6apIilQngHZQyPCuEw4SLaPRgCMJAqIOERHIWwAqCCUj9B32eoQmwovfB3xvTcWa2dw2doqdgN-6rXp-q1vLX62YetdsLhxuPyomujdYJi40Lc6-g4XQ7AxOlp8vtSQKkFfIQWeX9CHZmHFFS68GzrXfWy8w77ejXj38_k1f_NugBMXbaerP8MxOqh1G-zJTsfo5aZcFnfJ7PF2UlzPkg3lKiZSDd-FNvWa1yzTwCjo3EphuDR5LZVlyhrNcl7lgsPaVpmCyhKouDBrmVk2Rmf_vdvOv_c2xNXG950bJlc0oxnQXABjvy8zajA</recordid><startdate>20220215</startdate><enddate>20220215</enddate><creator>Kurihara, Ryosuke</creator><creator>Hirose, Yusuke</creator><creator>Sano, Sumika</creator><creator>Mitsumoto, Keisuke</creator><creator>Miyake, Atsushi</creator><creator>Tokunaga, Masashi</creator><creator>Settai, Rikio</creator><general>The Physical Society of Japan</general><scope>7U5</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope></search><sort><creationdate>20220215</creationdate><title>Elastic Soft Mode and Electric Quadrupole Response in Excitonic Insulator Candidate (Ta0.952V0.048)2NiSe5: Contribution of Electron–Phonon Interaction</title><author>Kurihara, Ryosuke ; Hirose, Yusuke ; Sano, Sumika ; Mitsumoto, Keisuke ; Miyake, Atsushi ; Tokunaga, Masashi ; Settai, Rikio</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-j249t-797565adfb4f36a0320a8e75d47d8f79e39eda384c8540bec690ce10c45db76e3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2022</creationdate><topic>Elastic properties</topic><topic>Electrons</topic><topic>Phonons</topic><topic>Quadrupoles</topic><topic>Transition temperature</topic><topic>Ultrasonic methods</topic><topic>Valence band</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Kurihara, Ryosuke</creatorcontrib><creatorcontrib>Hirose, Yusuke</creatorcontrib><creatorcontrib>Sano, Sumika</creatorcontrib><creatorcontrib>Mitsumoto, Keisuke</creatorcontrib><creatorcontrib>Miyake, Atsushi</creatorcontrib><creatorcontrib>Tokunaga, Masashi</creatorcontrib><creatorcontrib>Settai, Rikio</creatorcontrib><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>Kurihara, Ryosuke</au><au>Hirose, Yusuke</au><au>Sano, Sumika</au><au>Mitsumoto, Keisuke</au><au>Miyake, Atsushi</au><au>Tokunaga, Masashi</au><au>Settai, Rikio</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Elastic Soft Mode and Electric Quadrupole Response in Excitonic Insulator Candidate (Ta0.952V0.048)2NiSe5: Contribution of Electron–Phonon Interaction</atitle><jtitle>Journal of the Physical Society of Japan</jtitle><date>2022-02-15</date><risdate>2022</risdate><volume>91</volume><issue>2</issue><spage>024601</spage><pages>024601-</pages><issn>0031-9015</issn><eissn>1347-4073</eissn><abstract>We performed ultrasonic measurements on (Ta0.952V0.048)2NiSe5 to investigate the contribution of acoustic phonons at the zone center to structural and possible excitonic transitions. The transverse elastic constant C55 with irreducible representation B2g exhibits softening over 90% above a transition temperature of Ts = 280 K, indicating the soft mode of corresponding TA phonons. Our analysis based on the quadrupole response indicates that the electron–phonon interaction contributes to the excitonic transition in addition to the hybridization between the conduction and valence bands if the excitonic transition is realized.</abstract><cop>Tokyo</cop><pub>The Physical Society of Japan</pub><doi>10.7566/JPSJ.91.024601</doi></addata></record> |
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| language | eng |
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| source | Alma/SFX Local Collection |
| subjects | Elastic properties Electrons Phonons Quadrupoles Transition temperature Ultrasonic methods Valence band |
| title | Elastic Soft Mode and Electric Quadrupole Response in Excitonic Insulator Candidate (Ta0.952V0.048)2NiSe5: Contribution of Electron–Phonon Interaction |
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