Iridates from the molecular side

Kasper S. Pedersen; Jesper Bendix; Alain Tressaud; Etienne Durand; Høgni Weihe; Zaher Salman; Thorbjørn Juul Morsing; Daniel N. Woodruff; Yanhua Lan; Wolfgang Wernsdorfer; Corine Mathonière; Stergios Piligkos; Sophia I. Klokishner; Serghei Ostrovsky; Katharina Ollefs; Fabrice Wilhelm; Andrei Rogalev; Rodolphe Clérac

doi:10.1038/ncomms12195

Iridates from the molecular side

Kasper S. Pedersen, Jesper Bendix, Alain Tressaud, Etienne Durand, Høgni Weihe, Zaher Salman, Thorbjørn Juul Morsing, Daniel N. Woodruff, Yanhua Lan, Wolfgang Wernsdorfer, Corine Mathonière, Stergios Piligkos, Sophia I. Klokishner, Serghei Ostrovsky, Katharina Ollefs, Fabrice Wilhelm, Andrei Rogalev, Rodolphe Clérac

Department of Chemistry

28 Citations (Scopus)

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Abstract

New exotic phenomena have recently been discovered in oxides of paramagnetic Ir⁴⁺ ions, widely known as 'iridates'. Their remarkable properties originate from concerted effects of the crystal field, magnetic interactions and strong spin-orbit coupling, characteristic of 5d metal ions. Despite numerous experimental reports, the electronic structure of these materials is still challenging to elucidate, and not attainable in the isolated, but chemically inaccessible, [IrO₆]^8- species (the simplest molecular analogue of the elementary {IrO₆}^8- fragment present in all iridates). Here, we introduce an alternative approach to circumvent this problem by substituting the oxide ions in [IrO₆]^8- by isoelectronic fluorides to form the fluorido-iridate: [IrF₆]^2-. This molecular species has the same electronic ground state as the {IrO₆}^8- fragment, and thus emerges as an ideal model for iridates. These results may open perspectives for using fluorido-iridates as building-blocks for electronic and magnetic quantum materials synthesized by soft chemistry routes.

Original language	English
Article number	12195
Journal	Nature Communications
Volume	7
Number of pages	7
ISSN	2041-1723
DOIs	https://doi.org/10.1038/ncomms12195
Publication status	Published - 20 Jul 2016

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Pedersen, K. S., Bendix, J., Tressaud, A., Durand, E., Weihe, H., Salman, Z., Morsing, T. J., Woodruff, D. N., Lan, Y., Wernsdorfer, W., Mathonière, C., Piligkos, S., Klokishner, S. I., Ostrovsky, S., Ollefs, K., Wilhelm, F., Rogalev, A., & Clérac, R. (2016). Iridates from the molecular side. Nature Communications, 7, Article 12195. https://doi.org/10.1038/ncomms12195

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title = "Iridates from the molecular side",

abstract = "New exotic phenomena have recently been discovered in oxides of paramagnetic Ir4+ ions, widely known as 'iridates'. Their remarkable properties originate from concerted effects of the crystal field, magnetic interactions and strong spin-orbit coupling, characteristic of 5d metal ions. Despite numerous experimental reports, the electronic structure of these materials is still challenging to elucidate, and not attainable in the isolated, but chemically inaccessible, [IrO6]8- species (the simplest molecular analogue of the elementary {IrO6}8- fragment present in all iridates). Here, we introduce an alternative approach to circumvent this problem by substituting the oxide ions in [IrO6]8- by isoelectronic fluorides to form the fluorido-iridate: [IrF6]2-. This molecular species has the same electronic ground state as the {IrO6}8- fragment, and thus emerges as an ideal model for iridates. These results may open perspectives for using fluorido-iridates as building-blocks for electronic and magnetic quantum materials synthesized by soft chemistry routes.",

author = "Pedersen, {Kasper S.} and Jesper Bendix and Alain Tressaud and Etienne Durand and H{\o}gni Weihe and Zaher Salman and Morsing, {Thorbj{\o}rn Juul} and Woodruff, {Daniel N.} and Yanhua Lan and Wolfgang Wernsdorfer and Corine Mathoni{\`e}re and Stergios Piligkos and Klokishner, {Sophia I.} and Serghei Ostrovsky and Katharina Ollefs and Fabrice Wilhelm and Andrei Rogalev and Rodolphe Cl{\'e}rac",

year = "2016",

month = jul,

day = "20",

doi = "10.1038/ncomms12195",

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T1 - Iridates from the molecular side

AU - Pedersen, Kasper S.

AU - Bendix, Jesper

AU - Tressaud, Alain

AU - Durand, Etienne

AU - Weihe, Høgni

AU - Salman, Zaher

AU - Morsing, Thorbjørn Juul

AU - Woodruff, Daniel N.

AU - Lan, Yanhua

AU - Wernsdorfer, Wolfgang

AU - Mathonière, Corine

AU - Piligkos, Stergios

AU - Klokishner, Sophia I.

AU - Ostrovsky, Serghei

AU - Ollefs, Katharina

AU - Wilhelm, Fabrice

AU - Rogalev, Andrei

AU - Clérac, Rodolphe

PY - 2016/7/20

Y1 - 2016/7/20

N2 - New exotic phenomena have recently been discovered in oxides of paramagnetic Ir4+ ions, widely known as 'iridates'. Their remarkable properties originate from concerted effects of the crystal field, magnetic interactions and strong spin-orbit coupling, characteristic of 5d metal ions. Despite numerous experimental reports, the electronic structure of these materials is still challenging to elucidate, and not attainable in the isolated, but chemically inaccessible, [IrO6]8- species (the simplest molecular analogue of the elementary {IrO6}8- fragment present in all iridates). Here, we introduce an alternative approach to circumvent this problem by substituting the oxide ions in [IrO6]8- by isoelectronic fluorides to form the fluorido-iridate: [IrF6]2-. This molecular species has the same electronic ground state as the {IrO6}8- fragment, and thus emerges as an ideal model for iridates. These results may open perspectives for using fluorido-iridates as building-blocks for electronic and magnetic quantum materials synthesized by soft chemistry routes.

AB - New exotic phenomena have recently been discovered in oxides of paramagnetic Ir4+ ions, widely known as 'iridates'. Their remarkable properties originate from concerted effects of the crystal field, magnetic interactions and strong spin-orbit coupling, characteristic of 5d metal ions. Despite numerous experimental reports, the electronic structure of these materials is still challenging to elucidate, and not attainable in the isolated, but chemically inaccessible, [IrO6]8- species (the simplest molecular analogue of the elementary {IrO6}8- fragment present in all iridates). Here, we introduce an alternative approach to circumvent this problem by substituting the oxide ions in [IrO6]8- by isoelectronic fluorides to form the fluorido-iridate: [IrF6]2-. This molecular species has the same electronic ground state as the {IrO6}8- fragment, and thus emerges as an ideal model for iridates. These results may open perspectives for using fluorido-iridates as building-blocks for electronic and magnetic quantum materials synthesized by soft chemistry routes.

U2 - 10.1038/ncomms12195

DO - 10.1038/ncomms12195

M3 - Journal article

C2 - 27435800

SN - 2041-1723

VL - 7

JO - Nature Communications

JF - Nature Communications

M1 - 12195

ER -

Iridates from the molecular side

Abstract

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