Continuum Excitation and Pseudospin Wave in Quantum Spin-Liquid and Quadrupole Ordered States of Tb^sub 2+x^Ti^sub 2-x^O^sub 7+y
The ground states of the frustrated pyrochlore oxide Tb2+xTi2−xO7+y have been studied by inelastic neutron scattering experiments. Three single-crystal samples are investigated; one shows no phase transition (x = −0.007 < xc ∼ −0.0025), being a putative quantum spin-liquid (QSL), and the other tw...
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| Veröffentlicht in: | Journal of the Physical Society of Japan 2018-06, Vol.87 (6) |
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| container_title | Journal of the Physical Society of Japan |
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| creator | Kadowaki, Hiroaki Wakita, Mika Fåk, Björn Ollivier, Jacques Ohira-Kawamura, Seiko Nakajima, Kenji Takatsu, Hiroshi Tamai, Mototake |
| description | The ground states of the frustrated pyrochlore oxide Tb2+xTi2−xO7+y have been studied by inelastic neutron scattering experiments. Three single-crystal samples are investigated; one shows no phase transition (x = −0.007 < xc ∼ −0.0025), being a putative quantum spin-liquid (QSL), and the other two (x=0.000,0.003x=0.000,0.003) show electric quadrupole ordering (QO) below Tc ~ 0.5 K. The QSL sample shows continuum excitation spectra with an energy scale 0.1 meV as well as energy-resolution-limited (nominally) elastic scattering. As x is increased, pseudospin wave of the QO state emerges from this continuum excitation, which agrees with that of powder samples and consequently verifies good x control for the present single crystal samples. |
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Three single-crystal samples are investigated; one shows no phase transition (x = −0.007 < xc ∼ −0.0025), being a putative quantum spin-liquid (QSL), and the other two (x=0.000,0.003x=0.000,0.003) show electric quadrupole ordering (QO) below Tc ~ 0.5 K. The QSL sample shows continuum excitation spectra with an energy scale 0.1 meV as well as energy-resolution-limited (nominally) elastic scattering. As x is increased, pseudospin wave of the QO state emerges from this continuum excitation, which agrees with that of powder samples and consequently verifies good x control for the present single crystal samples.</description><identifier>ISSN: 0031-9015</identifier><identifier>EISSN: 1347-4073</identifier><language>eng</language><publisher>Tokyo: The Physical Society of Japan</publisher><subject>Crystal structure ; Elastic limit ; Elastic scattering ; Excitation spectra ; Inelastic scattering ; Neutron scattering ; Neutrons ; Phase transitions ; Quadrupoles ; Scattering ; Single crystals ; Wave power</subject><ispartof>Journal of the Physical Society of Japan, 2018-06, Vol.87 (6)</ispartof><rights>Copyright The Physical Society of Japan Jun 15, 2018</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>314,780,784</link.rule.ids></links><search><creatorcontrib>Kadowaki, Hiroaki</creatorcontrib><creatorcontrib>Wakita, Mika</creatorcontrib><creatorcontrib>Fåk, Björn</creatorcontrib><creatorcontrib>Ollivier, Jacques</creatorcontrib><creatorcontrib>Ohira-Kawamura, Seiko</creatorcontrib><creatorcontrib>Nakajima, Kenji</creatorcontrib><creatorcontrib>Takatsu, Hiroshi</creatorcontrib><creatorcontrib>Tamai, Mototake</creatorcontrib><title>Continuum Excitation and Pseudospin Wave in Quantum Spin-Liquid and Quadrupole Ordered States of Tb^sub 2+x^Ti^sub 2-x^O^sub 7+y</title><title>Journal of the Physical Society of Japan</title><description>The ground states of the frustrated pyrochlore oxide Tb2+xTi2−xO7+y have been studied by inelastic neutron scattering experiments. 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As x is increased, pseudospin wave of the QO state emerges from this continuum excitation, which agrees with that of powder samples and consequently verifies good x control for the present single crystal samples.</description><subject>Crystal structure</subject><subject>Elastic limit</subject><subject>Elastic scattering</subject><subject>Excitation spectra</subject><subject>Inelastic scattering</subject><subject>Neutron scattering</subject><subject>Neutrons</subject><subject>Phase transitions</subject><subject>Quadrupoles</subject><subject>Scattering</subject><subject>Single crystals</subject><subject>Wave power</subject><issn>0031-9015</issn><issn>1347-4073</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><recordid>eNqNjMGKwjAYhIPsgt1d3-EHjxJI0mrxLIoHQaUFb5W4iRDRpCb5pd720TeoD-BcZpj5mB7JeF6UtGBl_kEyxnJOp4yP--QrhBNjYsxFkZG_mbPRWMQLzLtfE2U0zoK0CjZBo3KhNRZ28qYh-RaljYmsUklX5opGPdDUK4-tO2tYe6W9VlClJx3AHaE-NAEPIEZdU5tnpF2zfqRydP8hn0d5Dnrw8m8yXMzr2ZK23l1Rh7g_OfQ2TXvBk4TgxSR_j_oH2ChQeA</recordid><startdate>20180615</startdate><enddate>20180615</enddate><creator>Kadowaki, Hiroaki</creator><creator>Wakita, Mika</creator><creator>Fåk, Björn</creator><creator>Ollivier, Jacques</creator><creator>Ohira-Kawamura, Seiko</creator><creator>Nakajima, Kenji</creator><creator>Takatsu, Hiroshi</creator><creator>Tamai, Mototake</creator><general>The Physical Society of Japan</general><scope>7U5</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope></search><sort><creationdate>20180615</creationdate><title>Continuum Excitation and Pseudospin Wave in Quantum Spin-Liquid and Quadrupole Ordered States of Tb^sub 2+x^Ti^sub 2-x^O^sub 7+y</title><author>Kadowaki, Hiroaki ; Wakita, Mika ; Fåk, Björn ; Ollivier, Jacques ; Ohira-Kawamura, Seiko ; Nakajima, Kenji ; Takatsu, Hiroshi ; Tamai, Mototake</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-proquest_journals_21111221463</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2018</creationdate><topic>Crystal structure</topic><topic>Elastic limit</topic><topic>Elastic scattering</topic><topic>Excitation spectra</topic><topic>Inelastic scattering</topic><topic>Neutron scattering</topic><topic>Neutrons</topic><topic>Phase transitions</topic><topic>Quadrupoles</topic><topic>Scattering</topic><topic>Single crystals</topic><topic>Wave power</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Kadowaki, Hiroaki</creatorcontrib><creatorcontrib>Wakita, Mika</creatorcontrib><creatorcontrib>Fåk, Björn</creatorcontrib><creatorcontrib>Ollivier, Jacques</creatorcontrib><creatorcontrib>Ohira-Kawamura, Seiko</creatorcontrib><creatorcontrib>Nakajima, Kenji</creatorcontrib><creatorcontrib>Takatsu, Hiroshi</creatorcontrib><creatorcontrib>Tamai, Mototake</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>Kadowaki, Hiroaki</au><au>Wakita, Mika</au><au>Fåk, Björn</au><au>Ollivier, Jacques</au><au>Ohira-Kawamura, Seiko</au><au>Nakajima, Kenji</au><au>Takatsu, Hiroshi</au><au>Tamai, Mototake</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Continuum Excitation and Pseudospin Wave in Quantum Spin-Liquid and Quadrupole Ordered States of Tb^sub 2+x^Ti^sub 2-x^O^sub 7+y</atitle><jtitle>Journal of the Physical Society of Japan</jtitle><date>2018-06-15</date><risdate>2018</risdate><volume>87</volume><issue>6</issue><issn>0031-9015</issn><eissn>1347-4073</eissn><abstract>The ground states of the frustrated pyrochlore oxide Tb2+xTi2−xO7+y have been studied by inelastic neutron scattering experiments. Three single-crystal samples are investigated; one shows no phase transition (x = −0.007 < xc ∼ −0.0025), being a putative quantum spin-liquid (QSL), and the other two (x=0.000,0.003x=0.000,0.003) show electric quadrupole ordering (QO) below Tc ~ 0.5 K. The QSL sample shows continuum excitation spectra with an energy scale 0.1 meV as well as energy-resolution-limited (nominally) elastic scattering. As x is increased, pseudospin wave of the QO state emerges from this continuum excitation, which agrees with that of powder samples and consequently verifies good x control for the present single crystal samples.</abstract><cop>Tokyo</cop><pub>The Physical Society of Japan</pub></addata></record> |
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| language | eng |
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| source | Alma/SFX Local Collection |
| subjects | Crystal structure Elastic limit Elastic scattering Excitation spectra Inelastic scattering Neutron scattering Neutrons Phase transitions Quadrupoles Scattering Single crystals Wave power |
| title | Continuum Excitation and Pseudospin Wave in Quantum Spin-Liquid and Quadrupole Ordered States of Tb^sub 2+x^Ti^sub 2-x^O^sub 7+y |
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