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Spin-orbit entangle...
Spin-orbit entangled j=1/2 moments in Ba(2)CWeIrO(6) : A frustrated fcc quantum magnet
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- Revelli, A. (author)
- Univ Cologne, Inst Phys 2, D-50937 Cologne, Germany.
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- Loo, C. C. (author)
- Univ Cologne, Inst Phys 2, D-50937 Cologne, Germany.
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- Kiese, D. (author)
- Univ Cologne, Inst Theoret Phys, D-50937 Cologne, Germany.
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- Becker, P. (author)
- Univ Cologne, Inst Geol & Mineral, Sect Crystallog, D-50674 Cologne, Germany.
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- Froehlich, T. (author)
- Univ Cologne, Inst Phys 2, D-50937 Cologne, Germany.
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- Lorenz, T. (author)
- Univ Cologne, Inst Phys 2, D-50937 Cologne, Germany.
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- Sala, M. Moretti (author)
- Politecn Milan, Dipartimento Fis, I-120133 Milan, Italy.
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- Monaco, G. (author)
- Univ Trento, Dipartimento Fis, I-38123 Povo, TN, Italy.
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- Buessen, F. L. (author)
- Univ Cologne, Inst Theoret Phys, D-50937 Cologne, Germany.
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- Attig, J. (author)
- Univ Cologne, Inst Theoret Phys, D-50937 Cologne, Germany.
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- Hermanns, Maria (author)
- KTH,Nordic Institute for Theoretical Physics NORDITA,Stockholm Univ, Albanova Univ Ctr, Dept Phys, SE-10691 Stockholm, Sweden.;Stockholm Univ, SE-10691 Stockholm, Sweden.
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Streltsov, S. , V (author)
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Khomskii, D. , I (author)
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- van den Brink, I. J. (author)
- IFW Dresden, Inst Theoret Solid State Phys, D-01069 Dresden, Germany.
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- Braden, M. (author)
- Univ Cologne, Inst Phys 2, D-50937 Cologne, Germany.
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- van Loosdrecht, P. H. M. (author)
- Univ Cologne, Inst Phys 2, D-50937 Cologne, Germany.
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- Trebst, S. (author)
- Univ Cologne, Inst Theoret Phys, D-50937 Cologne, Germany.
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- Paramekanti, A. (author)
- Univ Toronto, Dept Phys, Toronto, ON M5S 1A7, Canada.
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- Grueninger, M. (author)
- Univ Cologne, Inst Phys 2, D-50937 Cologne, Germany.
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Univ Cologne, Inst Phys 2, D-50937 Cologne, Germany Univ Cologne, Inst Theoret Phys, D-50937 Cologne, Germany. (creator_code:org_t)
- American Physical Society, 2019
- 2019
- English.
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In: Physical Review B. - : American Physical Society. - 2469-9950 .- 2469-9969. ; 100:8
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
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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
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (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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Froehlich, T.
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Lorenz, T.
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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. , I
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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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Grueninger, 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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Physical Review ...
- By the university
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Royal Institute of Technology