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RIXS interferometry...
RIXS interferometry and the role of disorder in the quantum magnet Ba3 Ti3-x Irx O9
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- Magnaterra, M. (author)
- Institute of Physics II, University of Cologne, 50937 Cologne, Germany
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- Moretti Sala, M. (author)
- ESRF, The European Synchrotron, 71 Avenue des Martyrs, CS40220, 38043 Grenoble Cedex 9, France, 71 Avenue des Martyrs, CS40220, Cedex 9; Dipartimento di Fisica, Politecnico di Milano, I-20133 Milano, Italy
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- Monaco, G. (author)
- Dipartimento di Fisica e Astronomia Galileo Galilei, Università di Padova, I-35121 Padova, Italy
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- Becker, P. (author)
- Institute of Geology and Mineralogy, Section Crystallography, University of Cologne, 50674 Cologne, Germany
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- Hermanns, Maria (author)
- Stockholms universitet,KTH,Nordic Institute for Theoretical Physics NORDITA,Department of Physics, Stockholm University, AlbaNova University Center, SE-106 91 Stockholm, Sweden,Fysikum,Nordiska institutet för teoretisk fysik (Nordita)
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- Warzanowski, P. (author)
- Institute of Physics II, University of Cologne, 50937 Cologne, Germany
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- Lorenz, T. (author)
- Institute of Physics II, University of Cologne, 50937 Cologne, Germany
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- Khomskii, D. I. (author)
- Institute of Physics II, University of Cologne, 50937 Cologne, Germany
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- Van Loosdrecht, P. H.M. (author)
- Institute of Physics II, University of Cologne, 50937 Cologne, Germany
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- Van Den Brink, J. (author)
- Institute for Theoretical Solid State Physics, IFW Dresden, 01069 Dresden, Germany; Institute for Theoretical Physics and Würzburg-Dresden Cluster of Excellence ct.qmat, Technische Universität Dresden, 01069 Dresden, Germany
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- Grüninger, M. (author)
- Institute of Physics II, University of Cologne, 50937 Cologne, Germany
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(creator_code:org_t)
- American Physical Society, 2023
- 2023
- English.
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In: Physical Review Research. - : American Physical Society. - 2643-1564. ; 5:1
- Related links:
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
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- Motivated by several claims of spin-orbit-driven spin-liquid physics in hexagonal Ba3Ti3-xIrxO9 hosting Ir2O9 dimers, we report on resonant inelastic x-ray scattering (RIXS) at the Ir L3 edge for different x. We demonstrate that magnetism in Ba3Ti3-xIrxO9 is governed by an unconventional realization of strong disorder, where cation disorder affects the character of the local moments. RIXS interferometry, studying the RIXS intensity over a broad range of transferred momentum q, is ideally suited to assign different excitations to different Ir sites. We find pronounced Ir-Ti site mixing. Both ions are distributed over two crystallographically inequivalent sites, giving rise to a coexistence of quasimolecular singlet states on Ir2O9 dimers and spin-orbit-entangled j=1/2 moments of 5d5Ir4+ ions. RIXS reveals different kinds of strong magnetic couplings for different bonding geometries, highlighting the role of cation disorder for the suppression of long-range magnetic order in this family of compounds.
Subject headings
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
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- By the author/editor
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Magnaterra, M.
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Moretti Sala, M.
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Monaco, G.
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Becker, P.
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Hermanns, Maria
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Warzanowski, P.
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Lorenz, T.
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Khomskii, D. I.
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Van Loosdrecht, ...
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Van Den Brink, J ...
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Grüninger, M.
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Condensed Matter ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Atom and Molecul ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Astronomy Astrop ...
- Articles in the publication
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Physical Review ...
- By the university
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Royal Institute of Technology
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Stockholm University