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Spin-orbit entangle...
Spin-orbit entangled j=1/2 moments in Ba2CeIrO6 : A frustrated fcc quantum magnet
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Revelli, A. (author)
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Loo, C. C. (author)
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Kiese, D. (author)
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Becker, P. (author)
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Fröhlich, T. (author)
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Lorenz, T. (author)
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Sala, M. Moretti (author)
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Monaco, G. (author)
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Buessen, F. L. (author)
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Attig, J. (author)
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- Hermanns, Maria (author)
- Stockholms universitet,Fysikum,Nordiska institutet för teoretisk fysik (Nordita)
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Streltsov, S. (author)
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Khomskii, D. (author)
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van den Brink, I. J. (author)
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Braden, M. (author)
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van Loosdrecht, P. H. M. (author)
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Trebst, S. (author)
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Paramekanti, A. (author)
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Grüninger, M. (author)
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(creator_code:org_t)
- 2019
- 2019
- English.
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In: Physical Review B. - 2469-9950 .- 2469-9969. ; 100:8
- Related links:
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https://arxiv.org/ab...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- We establish the double perovskite Ba2CeIrO6 as a nearly ideal model system for j = 1/2 moments, with resonant inelastic x-ray scattering indicating that the ideal j = 1/2 state contributes by more than 99% to the ground-state wave function. The local j = 1/2 moments form an fcc lattice and are found to order antiferromagnetically at T-N = 14 K, more than an order of magnitude below the Curie-Weiss temperature. Model calculations show that the geometric frustration of the fcc Heisenberg antiferromagnet is further enhanced by a next-nearest neighbor exchange, and a significant size of the latter is indicated by ab initio theory. Our theoretical analysis shows that magnetic order is driven by a bond-directional Kitaev exchange and by local distortions via a strong magnetoelastic effect. Both, the suppression of frustration by Kitaev exchange and the strong magnetoelastic effect are typically not expected for j = 1/2 compounds making Ba2CeIrO6 a riveting example for the rich physics of spin-orbit entangled Mott insulators.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Materialteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering (hsv//eng)
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Revelli, A.
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Loo, C. C.
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Kiese, D.
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Becker, P.
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Fröhlich, T.
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Lorenz, T.
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show more...
-
Sala, M. Moretti
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Monaco, G.
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Buessen, F. L.
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Attig, J.
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Hermanns, Maria
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Streltsov, S.
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Khomskii, D.
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van den Brink, I ...
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Braden, M.
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van Loosdrecht, ...
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Trebst, S.
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Paramekanti, A.
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Grüninger, M.
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show less...
- About the subject
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- ENGINEERING AND TECHNOLOGY
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ENGINEERING AND ...
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and Materials Engine ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
- Articles in the publication
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Physical Review ...
- By the university
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Stockholm University