A classification of spin frustration in molecular magnets from a physical study of large odd-numbered-metal, odd electron rings

Michael L. Baker; Grigore A. Timco; Stergios Piligkos; Jennifer S. Mathieson; Hannu Mutka; Floriana Tuna; Piotr Kozlowski; Michal Antkowiak; Tatiana Guidi; Tulika Gupta; Harapriya Rath; Robert J. Woolfson; Gregrorz Kamieniarz; Robin G. Pritchard; Høgni Weihe; Leroy Cronin; Gopalan Rajaraman; David Collison; Eric J. L. McInnes; Richard E. Winpenny

doi:10.1073/pnas.1213127109

A classification of spin frustration in molecular magnets from a physical study of large odd-numbered-metal, odd electron rings

Michael L. Baker, Grigore A. Timco, Stergios Piligkos, Jennifer S. Mathieson, Hannu Mutka, Floriana Tuna, Piotr Kozlowski, Michal Antkowiak, Tatiana Guidi, Tulika Gupta, Harapriya Rath, Robert J. Woolfson, Gregrorz Kamieniarz, Robin G. Pritchard, Høgni Weihe, Leroy Cronin, Gopalan Rajaraman, David Collison, Eric J. L. McInnes, Richard E. Winpenny

Department of Chemistry

91 Citations (Scopus)

Abstract

The term "frustration" in the context of magnetism was originally used by P. W. Anderson and quickly adopted for application to the description of spin glasses and later to very special lattice types, such as the kagomé. The original use of the termwas to describe systems with competing antiferromagnetic interactions and is important in current condensed matter physics in areas such as the description of emergent magnetic monopoles in spin ice. Within molecular magnetism, at least two very different definitions of frustration are used. Here we report the synthesis and characterization of unusual nine-metal rings, using magnetic measurements and inelastic neutron scattering, supported by density functional theory calculations. These compounds show different electronic/magnetic structures caused by frustration, and the findings lead us to propose a classification for frustration within molecular magnets that encompasses and clarifies all previous definitions.

Original language	English
Journal	Proceedings of the National Academy of Sciences of the United States of America
Volume	109
Issue number	47
Pages (from-to)	19113-19118
Number of pages	6
ISSN	0027-8424
DOIs	https://doi.org/10.1073/pnas.1213127109
Publication status	Published - 20 Nov 2012

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http://europepmc.org/abstract/MED/23132941

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Baker, M. L., Timco, G. A., Piligkos, S., Mathieson, J. S., Mutka, H., Tuna, F., Kozlowski, P., Antkowiak, M., Guidi, T., Gupta, T., Rath, H., Woolfson, R. J., Kamieniarz, G., Pritchard, R. G., Weihe, H., Cronin, L., Rajaraman, G., Collison, D., McInnes, E. J. L., & Winpenny, R. E. (2012). A classification of spin frustration in molecular magnets from a physical study of large odd-numbered-metal, odd electron rings. Proceedings of the National Academy of Sciences of the United States of America, 109(47), 19113-19118. https://doi.org/10.1073/pnas.1213127109

A classification of spin frustration in molecular magnets from a physical study of large odd-numbered-metal, odd electron rings. / Baker, Michael L.; Timco, Grigore A.; Piligkos, Stergios et al.

In: Proceedings of the National Academy of Sciences of the United States of America, Vol. 109, No. 47, 20.11.2012, p. 19113-19118.

Research output: Contribution to journal › Journal article › Research › peer-review

Baker, ML, Timco, GA, Piligkos, S, Mathieson, JS, Mutka, H, Tuna, F, Kozlowski, P, Antkowiak, M, Guidi, T, Gupta, T, Rath, H, Woolfson, RJ, Kamieniarz, G, Pritchard, RG, Weihe, H, Cronin, L, Rajaraman, G, Collison, D, McInnes, EJL & Winpenny, RE 2012, 'A classification of spin frustration in molecular magnets from a physical study of large odd-numbered-metal, odd electron rings', Proceedings of the National Academy of Sciences of the United States of America, vol. 109, no. 47, pp. 19113-19118. https://doi.org/10.1073/pnas.1213127109

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abstract = "The term {"}frustration{"} in the context of magnetism was originally used by P. W. Anderson and quickly adopted for application to the description of spin glasses and later to very special lattice types, such as the kagom{\'e}. The original use of the termwas to describe systems with competing antiferromagnetic interactions and is important in current condensed matter physics in areas such as the description of emergent magnetic monopoles in spin ice. Within molecular magnetism, at least two very different definitions of frustration are used. Here we report the synthesis and characterization of unusual nine-metal rings, using magnetic measurements and inelastic neutron scattering, supported by density functional theory calculations. These compounds show different electronic/magnetic structures caused by frustration, and the findings lead us to propose a classification for frustration within molecular magnets that encompasses and clarifies all previous definitions.",

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T1 - A classification of spin frustration in molecular magnets from a physical study of large odd-numbered-metal, odd electron rings

AU - Baker, Michael L.

AU - Timco, Grigore A.

AU - Piligkos, Stergios

AU - Mathieson, Jennifer S.

AU - Mutka, Hannu

AU - Tuna, Floriana

AU - Kozlowski, Piotr

AU - Antkowiak, Michal

AU - Guidi, Tatiana

AU - Gupta, Tulika

AU - Rath, Harapriya

AU - Woolfson, Robert J.

AU - Kamieniarz, Gregrorz

AU - Pritchard, Robin G.

AU - Weihe, Høgni

AU - Cronin, Leroy

AU - Rajaraman, Gopalan

AU - Collison, David

AU - McInnes, Eric J. L.

AU - Winpenny, Richard E.

PY - 2012/11/20

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N2 - The term "frustration" in the context of magnetism was originally used by P. W. Anderson and quickly adopted for application to the description of spin glasses and later to very special lattice types, such as the kagomé. The original use of the termwas to describe systems with competing antiferromagnetic interactions and is important in current condensed matter physics in areas such as the description of emergent magnetic monopoles in spin ice. Within molecular magnetism, at least two very different definitions of frustration are used. Here we report the synthesis and characterization of unusual nine-metal rings, using magnetic measurements and inelastic neutron scattering, supported by density functional theory calculations. These compounds show different electronic/magnetic structures caused by frustration, and the findings lead us to propose a classification for frustration within molecular magnets that encompasses and clarifies all previous definitions.

AB - The term "frustration" in the context of magnetism was originally used by P. W. Anderson and quickly adopted for application to the description of spin glasses and later to very special lattice types, such as the kagomé. The original use of the termwas to describe systems with competing antiferromagnetic interactions and is important in current condensed matter physics in areas such as the description of emergent magnetic monopoles in spin ice. Within molecular magnetism, at least two very different definitions of frustration are used. Here we report the synthesis and characterization of unusual nine-metal rings, using magnetic measurements and inelastic neutron scattering, supported by density functional theory calculations. These compounds show different electronic/magnetic structures caused by frustration, and the findings lead us to propose a classification for frustration within molecular magnets that encompasses and clarifies all previous definitions.

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JO - Proceedings of the National Academy of Sciences of the United States of America

JF - Proceedings of the National Academy of Sciences of the United States of America

IS - 47

ER -

A classification of spin frustration in molecular magnets from a physical study of large odd-numbered-metal, odd electron rings

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