Ferrotoroidic ground state in a heterometallic {CrIIIDyIII6} complex displaying slow magnetic relaxation
Identifieur interne : 000C49 ( Pmc/Curation ); précédent : 000C48; suivant : 000C50Ferrotoroidic ground state in a heterometallic {CrIIIDyIII6} complex displaying slow magnetic relaxation
Auteurs : Kuduva R. Vignesh [Inde] ; Alessandro Soncini ; Stuart K. Langley ; Wolfgang Wernsdorfer [Allemagne] ; Keith S. Murray ; Gopalan Rajaraman [Inde]Source :
- Nature Communications [ 2041-1723 ] ; 2017.
Abstract
Toroidal quantum states are most promising for building quantum computing and information storage devices, as they are insensitive to homogeneous magnetic fields, but interact with charge and spin currents, allowing this moment to be manipulated purely by electrical means. Coupling molecular toroids into larger toroidal moments via ferrotoroidic interactions can be pivotal not only to enhance ground state toroidicity, but also to develop materials displaying ferrotoroidic ordered phases, which sustain linear magneto–electric coupling and multiferroic behavior. However, engineering ferrotoroidic coupling is known to be a challenging task. Here we have isolated a {CrIIIDyIII6} complex that exhibits the much sought-after ferrotoroidic ground state with an enhanced toroidal moment, solely arising from intramolecular dipolar interactions. Moreover, a theoretical analysis of the observed sub-Kelvin zero-field hysteretic spin dynamics of {CrIIIDyIII6} reveals the pivotal role played by ferrotoroidic states in slowing down the magnetic relaxation, in spite of large calculated single-ion quantum tunneling rates.
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DOI: 10.1038/s41467-017-01102-5
PubMed: 29044098
PubMed Central: 5647347
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Alessandro Soncini<affiliation><nlm:aff id="Aff2"><institution-wrap><institution-id institution-id-type="ISNI">0000 0001 2179 088X</institution-id><institution-id institution-id-type="GRID">grid.1008.9</institution-id><institution>School of Chemistry,</institution><institution>University of Melbourne,</institution></institution-wrap>Melbourne, VIC 3010 Australia</nlm:aff><wicri:noCountry code="subfield">VIC 3010 Australia</wicri:noCountry></affiliation><affiliation><nlm:aff id="Aff3"><institution-wrap><institution-id institution-id-type="ISNI">0000 0001 0790 5329</institution-id><institution-id institution-id-type="GRID">grid.25627.34</institution-id><institution>School of Science and the Environment, Division of Chemistry,</institution><institution>Manchester Metropolitan University,</institution></institution-wrap>Manchester, M15 6BH UK</nlm:aff><wicri:noCountry code="subfield">M15 6BH UK</wicri:noCountry></affiliation><affiliation><nlm:aff id="Aff5"><institution-wrap><institution-id institution-id-type="ISNI">0000 0004 1936 7857</institution-id><institution-id institution-id-type="GRID">grid.1002.3</institution-id><institution>School of Chemistry, Monash University,</institution></institution-wrap>Melbourne, VIC 3800 Australia</nlm:aff><wicri:noCountry code="subfield">VIC 3800 Australia</wicri:noCountry></affiliation>Le document en format XML
<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Ferrotoroidic ground state in a heterometallic {Cr<sup>III</sup>Dy<sup>III</sup><sub>6</sub>} complex displaying slow magnetic relaxation</title><author><name sortKey="Vignesh, Kuduva R" sort="Vignesh, Kuduva R" uniqKey="Vignesh K" first="Kuduva R." last="Vignesh">Kuduva R. 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Vignesh</name><affiliation wicri:level="1"><nlm:aff id="Aff1"><institution-wrap><institution-id institution-id-type="ISNI">0000 0001 2198 7527</institution-id><institution-id institution-id-type="GRID">grid.417971.d</institution-id><institution>IITB-Monash Research Academy,</institution><institution>IIT Bombay,</institution></institution-wrap>Mumbai, 400076 India</nlm:aff><country xml:lang="fr">Inde</country><wicri:regionArea>Mumbai</wicri:regionArea></affiliation></author><author><name sortKey="Soncini, Alessandro" sort="Soncini, Alessandro" uniqKey="Soncini A" first="Alessandro" last="Soncini">Alessandro Soncini</name><affiliation><nlm:aff id="Aff2"><institution-wrap><institution-id institution-id-type="ISNI">0000 0001 2179 088X</institution-id><institution-id institution-id-type="GRID">grid.1008.9</institution-id><institution>School of Chemistry,</institution><institution>University of Melbourne,</institution></institution-wrap>Melbourne, VIC 3010 Australia</nlm:aff><wicri:noCountry code="subfield">VIC 3010 Australia</wicri:noCountry></affiliation></author><author><name sortKey="Langley, Stuart K" sort="Langley, Stuart K" uniqKey="Langley S" first="Stuart K." last="Langley">Stuart K. Langley</name><affiliation><nlm:aff id="Aff3"><institution-wrap><institution-id institution-id-type="ISNI">0000 0001 0790 5329</institution-id><institution-id institution-id-type="GRID">grid.25627.34</institution-id><institution>School of Science and the Environment, Division of Chemistry,</institution><institution>Manchester Metropolitan University,</institution></institution-wrap>Manchester, M15 6BH UK</nlm:aff><wicri:noCountry code="subfield">M15 6BH UK</wicri:noCountry></affiliation></author><author><name sortKey="Wernsdorfer, Wolfgang" sort="Wernsdorfer, Wolfgang" uniqKey="Wernsdorfer W" first="Wolfgang" last="Wernsdorfer">Wolfgang Wernsdorfer</name><affiliation wicri:level="1"><nlm:aff id="Aff4"><institution-wrap><institution-id institution-id-type="ISNI">0000 0001 0075 5874</institution-id><institution-id institution-id-type="GRID">grid.7892.4</institution-id><institution>Institute Neel, CNRS, F-38000 Grenoble, France and Institute of Nanotechnology,</institution><institution>Karlsruhe Institute of Technology,</institution></institution-wrap>76344 Eggenstein-Leopoldshafen, Germany</nlm:aff><country xml:lang="fr">Allemagne</country><wicri:regionArea>76344 Eggenstein-Leopoldshafen</wicri:regionArea></affiliation></author><author><name sortKey="Murray, Keith S" sort="Murray, Keith S" uniqKey="Murray K" first="Keith S." last="Murray">Keith S. Murray</name><affiliation><nlm:aff id="Aff5"><institution-wrap><institution-id institution-id-type="ISNI">0000 0004 1936 7857</institution-id><institution-id institution-id-type="GRID">grid.1002.3</institution-id><institution>School of Chemistry, Monash University,</institution></institution-wrap>Melbourne, VIC 3800 Australia</nlm:aff><wicri:noCountry code="subfield">VIC 3800 Australia</wicri:noCountry></affiliation></author><author><name sortKey="Rajaraman, Gopalan" sort="Rajaraman, Gopalan" uniqKey="Rajaraman G" first="Gopalan" last="Rajaraman">Gopalan Rajaraman</name><affiliation wicri:level="1"><nlm:aff id="Aff6"><institution-wrap><institution-id institution-id-type="ISNI">0000 0001 2198 7527</institution-id><institution-id institution-id-type="GRID">grid.417971.d</institution-id><institution>Department of Chemistry,</institution><institution>Indian Institute of Technology Bombay,</institution></institution-wrap>Mumbai, 400076 India</nlm:aff><country xml:lang="fr">Inde</country><wicri:regionArea>Mumbai</wicri:regionArea></affiliation></author></analytic><series><title level="j">Nature Communications</title><idno type="eISSN">2041-1723</idno><imprint><date when="2017">2017</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><p id="Par1">Toroidal quantum states are most promising for building quantum computing and information storage devices, as they are insensitive to homogeneous magnetic fields, but interact with charge and spin currents, allowing this moment to be manipulated purely by electrical means. Coupling molecular toroids into larger toroidal moments via ferrotoroidic interactions can be pivotal not only to enhance ground state toroidicity, but also to develop materials displaying ferrotoroidic ordered phases, which sustain linear magneto–electric coupling and multiferroic behavior. However, engineering ferrotoroidic coupling is known to be a challenging task. Here we have isolated a {Cr<sup>III</sup>Dy<sup>III</sup><sub>6</sub>} complex that exhibits the much sought-after ferrotoroidic ground state with an enhanced toroidal moment, solely arising from intramolecular dipolar interactions. Moreover, a theoretical analysis of the observed sub-Kelvin zero-field hysteretic spin dynamics of {Cr<sup>III</sup>Dy<sup>III</sup><sub>6</sub>} reveals the pivotal role played by ferrotoroidic states in slowing down the magnetic relaxation, in spite of large calculated single-ion quantum tunneling rates.</p></div></front><back><div1 type="bibliography"><listBibl><biblStruct><analytic><author><name sortKey="Christou, G" uniqKey="Christou G">G Christou</name></author><author><name sortKey="Gatteschi, D" uniqKey="Gatteschi D">D Gatteschi</name></author><author><name sortKey="Hendrickson, Dn" uniqKey="Hendrickson D">DN Hendrickson</name></author><author><name sortKey="Sessoli, R" uniqKey="Sessoli R">R Sessoli</name></author></analytic></biblStruct><biblStruct></biblStruct><biblStruct><analytic><author><name sortKey="Gatteschi, D" uniqKey="Gatteschi D">D Gatteschi</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Gatteschi, D" uniqKey="Gatteschi D">D 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<front><journal-meta><journal-id journal-id-type="nlm-ta">Nat Commun</journal-id><journal-id journal-id-type="iso-abbrev">Nat Commun</journal-id><journal-title-group><journal-title>Nature Communications</journal-title></journal-title-group><issn pub-type="epub">2041-1723</issn><publisher><publisher-name>Nature Publishing Group UK</publisher-name><publisher-loc>London</publisher-loc></publisher></journal-meta><article-meta><article-id pub-id-type="pmid">29044098</article-id><article-id pub-id-type="pmc">5647347</article-id><article-id pub-id-type="publisher-id">1102</article-id><article-id pub-id-type="doi">10.1038/s41467-017-01102-5</article-id><article-categories><subj-group subj-group-type="heading"><subject>Article</subject></subj-group></article-categories><title-group><article-title>Ferrotoroidic ground state in a heterometallic {Cr<sup>III</sup>Dy<sup>III</sup><sub>6</sub>} complex displaying slow magnetic relaxation</article-title></title-group><contrib-group><contrib contrib-type="author"><name><surname>Vignesh</surname><given-names>Kuduva R.</given-names></name><xref ref-type="aff" rid="Aff1">1</xref></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">http://orcid.org/0000-0002-6779-7304</contrib-id><name><surname>Soncini</surname><given-names>Alessandro</given-names></name><address><email>asoncini@unimelb.edu.au</email></address><xref ref-type="aff" rid="Aff2">2</xref></contrib><contrib contrib-type="author"><name><surname>Langley</surname><given-names>Stuart K.</given-names></name><xref ref-type="aff" rid="Aff3">3</xref></contrib><contrib contrib-type="author"><name><surname>Wernsdorfer</surname><given-names>Wolfgang</given-names></name><xref ref-type="aff" rid="Aff4">4</xref></contrib><contrib contrib-type="author" corresp="yes"><name><surname>Murray</surname><given-names>Keith S.</given-names></name><address><email>keith.murray@monash.edu</email></address><xref ref-type="aff" rid="Aff5">5</xref></contrib><contrib contrib-type="author" corresp="yes"><name><surname>Rajaraman</surname><given-names>Gopalan</given-names></name><address><email>rajaraman@chem.iitb.ac.in</email></address><xref ref-type="aff" rid="Aff6">6</xref></contrib><aff id="Aff1"><label>1</label><institution-wrap><institution-id institution-id-type="ISNI">0000 0001 2198 7527</institution-id><institution-id institution-id-type="GRID">grid.417971.d</institution-id><institution>IITB-Monash Research Academy,</institution><institution>IIT Bombay,</institution></institution-wrap>Mumbai, 400076 India</aff><aff id="Aff2"><label>2</label><institution-wrap><institution-id institution-id-type="ISNI">0000 0001 2179 088X</institution-id><institution-id institution-id-type="GRID">grid.1008.9</institution-id><institution>School of Chemistry,</institution><institution>University of Melbourne,</institution></institution-wrap>Melbourne, VIC 3010 Australia</aff><aff id="Aff3"><label>3</label><institution-wrap><institution-id institution-id-type="ISNI">0000 0001 0790 5329</institution-id><institution-id institution-id-type="GRID">grid.25627.34</institution-id><institution>School of Science and the Environment, Division of Chemistry,</institution><institution>Manchester Metropolitan University,</institution></institution-wrap>Manchester, M15 6BH UK</aff><aff id="Aff4"><label>4</label><institution-wrap><institution-id institution-id-type="ISNI">0000 0001 0075 5874</institution-id><institution-id institution-id-type="GRID">grid.7892.4</institution-id><institution>Institute Neel, CNRS, F-38000 Grenoble, France and Institute of Nanotechnology,</institution><institution>Karlsruhe Institute of Technology,</institution></institution-wrap>76344 Eggenstein-Leopoldshafen, Germany</aff><aff id="Aff5"><label>5</label><institution-wrap><institution-id institution-id-type="ISNI">0000 0004 1936 7857</institution-id><institution-id institution-id-type="GRID">grid.1002.3</institution-id><institution>School of Chemistry, Monash University,</institution></institution-wrap>Melbourne, VIC 3800 Australia</aff><aff id="Aff6"><label>6</label><institution-wrap><institution-id institution-id-type="ISNI">0000 0001 2198 7527</institution-id><institution-id institution-id-type="GRID">grid.417971.d</institution-id><institution>Department of Chemistry,</institution><institution>Indian Institute of Technology Bombay,</institution></institution-wrap>Mumbai, 400076 India</aff></contrib-group><pub-date pub-type="epub"><day>18</day><month>10</month><year>2017</year></pub-date><pub-date pub-type="pmc-release"><day>18</day><month>10</month><year>2017</year></pub-date><pub-date pub-type="collection"><year>2017</year></pub-date><volume>8</volume><elocation-id>1023</elocation-id><history><date date-type="received"><day>2</day><month>2</month><year>2017</year></date><date date-type="accepted"><day>18</day><month>8</month><year>2017</year></date></history><permissions><copyright-statement>© The Author(s) 2017</copyright-statement><license license-type="OpenAccess"><license-p><bold>Open Access</bold> This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit <ext-link ext-link-type="uri" xlink:href="http://creativecommons.org/licenses/by/4.0/">http://creativecommons.org/licenses/by/4.0/</ext-link>.</license-p></license></permissions><abstract id="Abs1"><p id="Par1">Toroidal quantum states are most promising for building quantum computing and information storage devices, as they are insensitive to homogeneous magnetic fields, but interact with charge and spin currents, allowing this moment to be manipulated purely by electrical means. Coupling molecular toroids into larger toroidal moments via ferrotoroidic interactions can be pivotal not only to enhance ground state toroidicity, but also to develop materials displaying ferrotoroidic ordered phases, which sustain linear magneto–electric coupling and multiferroic behavior. However, engineering ferrotoroidic coupling is known to be a challenging task. Here we have isolated a {Cr<sup>III</sup>Dy<sup>III</sup><sub>6</sub>} complex that exhibits the much sought-after ferrotoroidic ground state with an enhanced toroidal moment, solely arising from intramolecular dipolar interactions. Moreover, a theoretical analysis of the observed sub-Kelvin zero-field hysteretic spin dynamics of {Cr<sup>III</sup>Dy<sup>III</sup><sub>6</sub>} reveals the pivotal role played by ferrotoroidic states in slowing down the magnetic relaxation, in spite of large calculated single-ion quantum tunneling rates.</p></abstract><abstract id="Abs2" abstract-type="web-summary"><p id="Par2">Coupling molecular toroids via ferrotoroidic interactions represents an important opportunity to enhance ground state toroidicity, but is challenging to achieve. Here the authors isolate a {Cr<sup>III</sup>Dy<sup>III</sup><sub>6</sub>} complex with a ferrotoroidic ground state and an enhanced toroidal moment, arising solely from intramolecular dipolar interactions.</p></abstract><custom-meta-group><custom-meta><meta-name>issue-copyright-statement</meta-name><meta-value>© The Author(s) 2017</meta-value></custom-meta></custom-meta-group></article-meta></front></pmc></record>Pour manipuler ce document sous Unix (Dilib)
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