Anisotropic Phase Diagram for Quadrupole Ordering and Possible Crystal Field Level Structure in TmTe
Identifieur interne : 001457 ( Main/Exploration ); précédent : 001456; suivant : 001458Anisotropic Phase Diagram for Quadrupole Ordering and Possible Crystal Field Level Structure in TmTe
Auteurs : Ryousuke Shiina [Japon] ; Tatsuya Nagao [Japon]Source :
- Journal of the Physical Society of Japan [ 0031-9015 ] ; 2008.
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Abstract
The origin of an anisotropic phase diagram for the antiferro-quadrupolar (AFQ) order in TmTe is studied using a realistic J = 7/2 multiplet model, based on a previous analysis for the classical limit J → oo. Assuming the Γ3-type AFQ order parameters, a quantitative comparison of the phase diagram with the experiments is presented for a few candidates of the crystal field (CF) level schemes. It is shown that a scheme with a sequence from low- to high-energy levels, Γ8-Γ6-Γ7, naturally explains the observed field dependence and anisotropy of the phase diagram. The resonant x-ray scattering signals in the AFQ phase are studied to explore a possibility of identifying the order parameter and the CF scheme experimentally.
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en" level="a">Anisotropic Phase Diagram for Quadrupole Ordering and Possible Crystal Field Level Structure in TmTe</title><author><name sortKey="Shiina, Ryousuke" sort="Shiina, Ryousuke" uniqKey="Shiina R" first="Ryousuke" last="Shiina">Ryousuke Shiina</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Department of Physics, Tokyo Metropolitan University</s1><s2>Hachioji, Tokyo 192-0397</s2><s3>JPN</s3><sZ>1 aut.</sZ></inist:fA14><country>Japon</country><placeName><settlement type="city">Tokyo</settlement><region type="région">Région de Kantō</region></placeName></affiliation></author><author><name sortKey="Nagao, Tatsuya" sort="Nagao, Tatsuya" uniqKey="Nagao T" first="Tatsuya" last="Nagao">Tatsuya Nagao</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Faculty of Engineering, Gunma University</s1><s2>Kiryu, Gunma 376-8515</s2><s3>JPN</s3><sZ>2 aut.</sZ></inist:fA14><country>Japon</country><wicri:noRegion>Kiryu, Gunma 376-8515</wicri:noRegion></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">INIST</idno><idno type="inist">09-0127170</idno><date when="2008">2008</date><idno type="stanalyst">PASCAL 09-0127170 INIST</idno><idno type="RBID">Pascal:09-0127170</idno><idno type="wicri:Area/Pascal/Corpus">000534</idno><idno type="wicri:Area/Pascal/Curation">000534</idno><idno type="wicri:Area/Pascal/Checkpoint">000686</idno><idno type="wicri:explorRef" wicri:stream="Pascal" wicri:step="Checkpoint">000686</idno><idno type="wicri:doubleKey">0031-9015:2008:Shiina R:anisotropic:phase:diagram</idno><idno type="wicri:Area/Main/Merge">001497</idno><idno type="wicri:Area/Main/Curation">001457</idno><idno type="wicri:Area/Main/Exploration">001457</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Anisotropic Phase Diagram for Quadrupole Ordering and Possible Crystal Field Level Structure in TmTe</title><author><name sortKey="Shiina, Ryousuke" sort="Shiina, Ryousuke" uniqKey="Shiina R" first="Ryousuke" last="Shiina">Ryousuke Shiina</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Department of Physics, Tokyo Metropolitan University</s1><s2>Hachioji, Tokyo 192-0397</s2><s3>JPN</s3><sZ>1 aut.</sZ></inist:fA14><country>Japon</country><placeName><settlement type="city">Tokyo</settlement><region type="région">Région de Kantō</region></placeName></affiliation></author><author><name sortKey="Nagao, Tatsuya" sort="Nagao, Tatsuya" uniqKey="Nagao T" first="Tatsuya" last="Nagao">Tatsuya Nagao</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Faculty of Engineering, Gunma University</s1><s2>Kiryu, Gunma 376-8515</s2><s3>JPN</s3><sZ>2 aut.</sZ></inist:fA14><country>Japon</country><wicri:noRegion>Kiryu, Gunma 376-8515</wicri:noRegion></affiliation></author></analytic><series><title level="j" type="main">Journal of the Physical Society of Japan</title><title level="j" type="abbreviated">J. Phys. Soc. Jpn.</title><idno type="ISSN">0031-9015</idno><imprint><date when="2008">2008</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Journal of the Physical Society of Japan</title><title level="j" type="abbreviated">J. Phys. Soc. Jpn.</title><idno type="ISSN">0031-9015</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Anisotropy</term><term>Antiferromagnetism</term><term>Crystal field</term><term>Magnetic field effects</term><term>Order parameters</term><term>Ordering</term><term>Phase transformations</term><term>Quadrupole interactions</term><term>Resonance scattering</term><term>Thulium tellurides</term><term>X-ray scattering</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Anisotropie</term><term>Antiferromagnétisme</term><term>Relation ordre</term><term>Champ cristallin</term><term>Interaction quadripolaire</term><term>Paramètre ordre</term><term>Diffusion résonnante</term><term>Diffusion RX</term><term>Transformation phase</term><term>Effet champ magnétique</term><term>Tellurure de thulium</term><term>TmTe</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The origin of an anisotropic phase diagram for the antiferro-quadrupolar (AFQ) order in TmTe is studied using a realistic J = 7/2 multiplet model, based on a previous analysis for the classical limit J → oo. Assuming the Γ<sub>3</sub>-type AFQ order parameters, a quantitative comparison of the phase diagram with the experiments is presented for a few candidates of the crystal field (CF) level schemes. It is shown that a scheme with a sequence from low- to high-energy levels, Γ<sub>8</sub>-Γ<sub>6</sub>-Γ<sub>7</sub>, naturally explains the observed field dependence and anisotropy of the phase diagram. The resonant x-ray scattering signals in the AFQ phase are studied to explore a possibility of identifying the order parameter and the CF scheme experimentally.</div></front></TEI><affiliations><list><country><li>Japon</li></country><region><li>Région de Kantō</li></region><settlement><li>Tokyo</li></settlement></list><tree><country name="Japon"><region name="Région de Kantō"><name sortKey="Shiina, Ryousuke" sort="Shiina, Ryousuke" uniqKey="Shiina R" first="Ryousuke" last="Shiina">Ryousuke Shiina</name></region><name sortKey="Nagao, Tatsuya" sort="Nagao, Tatsuya" uniqKey="Nagao T" first="Tatsuya" last="Nagao">Tatsuya Nagao</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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