Iridates from the molecular side View Full Text


Ontology type: schema:ScholarlyArticle      Open Access: True


Article Info

DATE

2016-07-20

AUTHORS

Kasper S Pedersen, Jesper Bendix, Alain Tressaud, Etienne Durand, Høgni Weihe, Zaher Salman, Thorbjørn J 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

ABSTRACT

New exotic phenomena have recently been discovered in oxides of paramagnetic Ir(4+) 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. More... »

PAGES

12195

Identifiers

URI

http://scigraph.springernature.com/pub.10.1038/ncomms12195

DOI

http://dx.doi.org/10.1038/ncomms12195

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1002649054

PUBMED

https://www.ncbi.nlm.nih.gov/pubmed/27435800


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19 schema:description New exotic phenomena have recently been discovered in oxides of paramagnetic Ir(4+) 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.
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27 approach
28 chemistry route
29 concerted effect
30 coupling
31 crystal field
32 effect
33 electronic ground state
34 electronic structure
35 exotic phenomena
36 experimental reports
37 field
38 fluoride
39 fragments
40 ground state
41 ideal model
42 interaction
43 ions
44 iridates
45 isoelectronic fluorides
46 magnetic interactions
47 magnetic quantum materials
48 materials
49 metal ions
50 model
51 molecular side
52 molecular species
53 new exotic phenomena
54 numerous experimental reports
55 oxide
56 oxide ions
57 perspective
58 phenomenon
59 problem
60 properties
61 quantum materials
62 remarkable properties
63 report
64 results
65 route
66 same electronic ground state
67 side
68 soft chemistry route
69 species
70 spin-orbit coupling
71 state
72 strong spin-orbit coupling
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